How do you form the comparative in German?

Add -er to the positive form of the adjective: klein → kleiner, schnell → schneller, neu → neuer. Adjectives ending in -el drop the e before adding -er (dunkel → dunkler). When used attributively (before a noun), the comparative takes full adjective endings: ein kleineres Kind, der schnellere Zug. When used predicatively (after sein, werden, bleiben), no additional ending is added: Das Kind ist kleiner.

How do you form the superlative in German?

German has two superlative forms with distinct uses. The predicative superlative is am + adjective + -sten (no adjective ending): Das Kind ist am kleinsten. The attributive superlative uses the definite article plus the adjective + -ste plus weak-declension endings: das kleinste Kind, die schönste Frau, den längsten Weg. A linking -e- is added when the stem ends in t, d, s, ß, x, or z: am ältesten, am heißesten. Both forms translate to English "the smallest" or "the most beautiful" — the split is German-specific.

What is the difference between am schönsten and der/die/das schönste?

Both mean "the most beautiful" in English but function differently in German. Am schönsten is predicative: it follows a linking verb (sein, werden, bleiben) and takes no adjective ending — Das Wetter ist am schönsten im Sommer. Die/der/das schönste is attributive: it precedes a noun and takes weak-declension endings — der schönste Tag, die schönste Frau, das schönste Lied. Never use am -sten before a noun, and never use the bare -ste form after a linking verb.

Which adjectives take an umlaut in the comparative?

Almost all one-syllable adjectives whose stem vowel is a, o, or u take an umlaut in the comparative and superlative — this rule covers about 95% of cases: alt → älter, jung → jünger, kalt → kälter, warm → wärmer, groß → größer, lang → länger, kurz → kürzer, stark → stärker. Notable exceptions that do NOT umlaut include flach, klar, schlank, froh, and stolz. Multi-syllable adjectives almost never umlaut (schön → schöner, not umlaut).

What is the difference between als and wie in German comparisons?

Als is used after a comparative form to express inequality — Er ist größer als sie ("He is taller than she"). Wie is used in equal comparisons after so … wie — Er ist so groß wie sie ("He is as tall as she"). Using wie instead of als after a comparative is the single most common comparison error among English speakers, because English "than" maps to German als while English "as … as" maps to German so … wie. Never say *Er ist größer wie sie — this is grammatically wrong.

What are the most common irregular comparatives in German?

Four adjectives are fully suppletive — their comparative stem is unrelated to the positive form: gut → besser → am besten (good/better/best); viel → mehr → am meisten (much/more/most); hoch → höher → am höchsten (note: hoch drops the c in all inflected forms — höher, not hocher); nah → näher → am nächsten. The adverb gern also has an irregular series: gern → lieber → am liebsten. These five, together with the one-syllable umlaut group, account for virtually all the "irregular" comparatives learners encounter at A2–B1.

How do you say "the more X, the more Y" in German?

Use the je … desto or je … umso construction: Je mehr ich lerne, desto besser werde ich ("The more I learn, the better I get"). Je introduces a subordinate clause with verb-final word order; desto or umso opens the main clause with the comparative adjective in position 1 followed by V2 inversion. Both desto and umso are interchangeable in this construction — umso is slightly more informal. This construction is a B1 exam staple used extensively in formal writing and speaking tasks.

Do comparative and superlative adjectives take adjective endings before a noun?

Yes, always. Comparative adjectives before a noun take the same strong, mixed, or weak endings as positive adjectives: ein größerer Mann (strong, masc. nom.), der größere Mann (weak, masc. nom.), einen größeren Mann (mixed, masc. acc.). Superlative adjectives before a noun always take weak endings because they always follow the definite article or a demonstrative: der/die/das + adjective + -ste + weak ending. The full weak-declension pattern for superlatives follows the same rules as adjective endings generally — see the adjective endings guide for the complete declension tables.

Three forms, one Umlaut rule, two ways to say 'than'.

German comparison comes down to three questions. How is the comparative formed? (-er, almost always.) Which superlative form fits? (Predicative am …sten after a linking verb; attributive der/die/das …ste before a noun.) Does the adjective umlaut? (Yes, if it's one syllable with a/o/u — ~95% of the time.) Everything else is a variation on those three answers.

TL;DR

Comparative: add -er to the positive (klein → kleiner). Superlative: predicative am …sten after sein/werden/bleiben; attributive der/die/das …ste before a noun — never swap them. Umlaut rule: one-syllable adjectives with a/o/u almost always umlaut (alt → älter, groß → größer). Exceptions: flach, froh, klar, schlank, stolz. als vs. wie: als after a comparative (größer als), wie after so … wie (so groß wie) — using wie after a comparative is the #1 learner error.

Three forms, not a list of exceptions

German textbooks often present comparison as a long list of irregulars to memorise. The OWL approach is different: comparison is three forms plus one umlaut rule plus five genuine irregulars.

The three forms are: positive (klein — small), comparative (kleiner — smaller), and superlative (am kleinsten / das kleinste — the smallest). The comparative always adds -er; the superlative always adds -st-. That pattern is consistent across almost all German adjectives.

The friction points are: (1) which superlative form to use (predicative vs. attributive — both mean "the smallest" but work in different positions), (2) the umlaut rule for one-syllable a/o/u adjectives, and (3) choosing als vs. wie for "than" vs. "as … as". This page handles all three.

The three forms at a glance

klein (small) as the worked adjective throughout.

Positive / Comparative / Superlative

TABLE

All three forms, two superlative uses — five rows to master

Form	Rule	klein example	English
Positive	—	klein	small
Comparative (predicative)	+ -er, no ending	Das Kind ist kleiner.	smaller
Comparative (attributive)	+ -er + adjective ending	ein kleineres Kind	a smaller child
Superlative (predicative)	am + stem + -sten	Das Kind ist am kleinsten.	the smallest
Superlative (attributive)	der/die/das + stem + -ste + ending	das kleinste Kind	the smallest child

Formation rules

Comparative

stem + -er

klein → kleiner
schnell → schneller
neu → neuer
dunkel → dunkler (drop -e before -er)

Used predicatively (no ending) or attributively (+ adjective endings): Das Auto ist schneller. / ein schnelleres Auto.

Superlative — predicative

am + stem + -sten

klein → am kleinsten
schnell → am schnellsten
jung → am jüngsten

Follows sein, werden, bleiben. Der Zug ist am schnellsten. No adjective ending added.

Superlative — attributive

der/die/das + stem + -ste + weak ending

der schnellste Zug (masc. nom.)
die kleinste Stadt (fem. nom.)
das neueste Modell (neut. nom.)

Always with the definite article (or a demonstrative). Takes full weak-declension endings.

Linking -e- in the superlative

stem ends in t, d, s, ß, x, z → add -est-

alt → am ältesten
heiß → am heißesten
kurz → am kürzesten

The linking -e- prevents an unpronounceable consonant cluster. Apply to both predicative and attributive superlative.

The umlaut rule — and the five genuine irregulars

One-syllable adjectives whose stem vowel is a, o, or u almost always add an umlaut in the comparative and superlative (~95% of this group). That one rule accounts for ~12 of the "irregulars" most textbooks list separately.

The table below groups the true suppletive irregulars (gut, viel, gern, hoch, nah — where the comparative stem is unrelated to the positive) together with the high-frequency umlaut group. Learn the suppletive five as vocabulary; predict the rest from the rule.

Irregular & umlaut comparatives

TABLE

5 suppletive + 7 umlaut — the complete short list

Positive	Comparative	Superlative (pred.)	Superlative (attr.)
gut	besser	am besten	der/die/das beste
viel	mehr	am meisten	der/die/das meiste
gern	lieber	am liebsten	der/die/das liebste
hoch	höher	am höchsten	der/die/das höchste
nah	näher	am nächsten	der/die/das nächste
alt	älter	am ältesten	der/die/das älteste
jung	jünger	am jüngsten	der/die/das jüngste
kalt	kälter	am kältesten	der/die/das kälteste
warm	wärmer	am wärmsten	der/die/das wärmste
groß	größer	am größten	der/die/das größte
lang	länger	am längsten	der/die/das längste
stark	stärker	am stärksten	der/die/das stärkste

Shaded rows: truly suppletive — the comparative stem is unrelated to the positive. Memorise these five as vocabulary entries.

Exceptions that do NOT umlaut (despite having a/o/u): flach → flacher, froh → froher, klar → klarer, schlank → schlanker, stolz → stolzer, toll → toller, voll → voller. These must be memorised; over-applying the rule to them is a common error.

Note on hoch: the consonant changes — hoch drops the c in all inflected forms. Comparative is höher (not hocher); attributive is ein hoher Berg (not ein hocher Berg).

Predicative vs. attributive superlative

The single most-confused point in German comparison. Both forms mean "the most X" in English; the choice depends on where the adjective sits in the sentence.

am …sten vs. der/die/das …ste

Both translate to English 'the most X' — but they occupy different slots in a German sentence.

am …sten predicative — follows sein/werden/bleiben

No adjective ending. Comes after a linking verb.

Das Wetter ist am schönsten im Sommer.

The weather is most beautiful in summer.

der/die/das …ste attributive — comes before a noun

Takes weak-declension ending. Always with definite article.

der schönste Tag, die schönste Stadt, das schönste Lied

the most beautiful day / city / song

Never use am …sten directly before a noun (*der am schönsten Mann → der schönste Mann). Never use the bare -ste form after a linking verb (*Er ist der schönste → Er ist am schönsten).

Predicative (after sein)

Dieser Zug ist am schnellsten.

This train is the fastest.

Attributive (before noun)

Der schnellste Zug fährt um 8 Uhr ab.

The fastest train departs at 8.

Predicative (after bleiben)

Von allen bleibt sie am ruhigsten.

Of all of them she stays the calmest.

Attributive (nom. fem.)

Das war die schönste Reise meines Lebens.

That was the most beautiful trip of my life.

Full adjective endings guide → Articles and definite article forms →

als vs. wie — the #1 comparison error

English uses "than" for all comparisons. German splits the job between two different words depending on whether you are comparing equals or unequals.

als vs. wie

Same English translation 'than / as', but they follow completely different rules in German.

als after a comparative — unequal comparison

Use after a comparative form. English: "than".

Berlin ist schöner als München.

Berlin is more beautiful than Munich.

wie in so … wie — equal comparison

Use after so (or nicht so). English: "as … as".

Berlin ist so groß wie Hamburg.

Berlin is as big as Hamburg.

Spoken regional German sometimes uses wie after a comparative ('größer wie sie') — this is heard but formally incorrect. In writing and exams, always use als after a comparative.

als — unequal

Er trinkt mehr Kaffee als ich.

He drinks more coffee than I do.

so … wie — equal

Sie ist so klug wie ihr Bruder.

She is as clever as her brother.

nicht so … wie — not equal

Der Film ist nicht so gut wie das Buch.

The film is not as good as the book.

common error

*Er ist größer wie sie.

→ Er ist größer als sie.

After a comparative, always als.

Comparing equals: so … wie

(genau) so + positive adjective + wie = as … as

nicht so + positive adjective + wie = not as … as

The adjective stays in the positive form (not comparative). Compare: größer als (unequal, comparative) vs. so groß wie (equal, positive).

Das Zimmer ist genauso groß wie meines.

The room is exactly as big as mine.

Der Zug ist nicht so schnell wie das Flugzeug.

The train is not as fast as the plane.

Er kocht so gut wie ein Profi.

He cooks as well as a professional.

Sie arbeitet genauso hart wie ihr Chef.

She works just as hard as her boss.

je … desto / umso — "the more X, the more Y"

je + comparative + V-final clause

desto / umso + comparative + V2 (verb before subject)

Je mehr ich lerne, desto besser werde ich.

The more I learn, the better I get.

Je kälter es wird, umso mehr trinke ich heißen Tee.

The colder it gets, the more hot tea I drink.

Je länger wir warten, desto schwieriger wird es.

The longer we wait, the more difficult it becomes.

Word order note: The je-clause is verb-final (like a subordinate clause). The desto/umso-clause is V2, but the comparative adjective takes position 1 — the verb immediately follows it, before the subject. This is a B1 exam staple.

desto vs. umso: fully interchangeable in meaning. Umso is slightly more informal.

The V-final and V2 inversion patterns here follow the same logic as the Satzklammer. → Word order guide

immer + comparative — progressive change

immer + comparative expresses a growing degree — "more and more", "less and less", "better and better".

Es wird immer besser.

It is getting better and better.

Die Aufgaben werden immer schwieriger.

The tasks are getting more and more difficult.

Ich lerne immer mehr.

I am learning more and more.

Es gibt immer weniger Zeit.

There is less and less time.

Degree adverbs with comparatives

Comparatives can be modified by degree adverbs. Note: sehr does NOT modify comparatives — sehr only modifies the positive form (*sehr größer is wrong; viel größer is correct).

etwas a bit, slightly etwas größer

viel much, a lot viel größer

weit far, considerably weit größer

noch even, still noch größer

genauso just as genauso groß wie

Comparative adjective endings before a noun

When a comparative or superlative adjective precedes a noun, it takes the same strong/mixed/weak endings as any other adjective. The comparison ending (-er or -ste-) and the case ending stack together.

Comparative — indefinite article (mixed)

ein schnellerer Zug (masc. nom.)

einen schnelleren Zug (masc. acc.)

Comparative — definite article (weak)

der schnellere Zug (masc. nom.)

dem schnelleren Zug (masc. dat.)

Superlative — always weak (definite article)

der schnellste Zug (masc. nom.)

dem schnellsten Zug (masc. dat.)

Superlative — plural (weak)

die schnellsten Züge (pl. nom.)

den schnellsten Zügen (pl. dat.)

Full adjective endings guide with declension tables →

5 mistakes to watch for

wie instead of als after a comparative

*Er ist größer wie sie. → Er ist größer als sie.

"Than" in comparisons of inequality is always als, never wie. Wie is reserved for so … wie (equality).

Forgetting the umlaut

*alt → alter → alt → älter

One-syllable adjectives with a/o/u almost always umlaut: alt, jung, groß, warm, kalt, lang, stark, kurz.

am -sten before a noun

*Er ist der am schönsten Mann. → Er ist der schönste Mann.

Am …sten is the predicative form — it follows a linking verb. Before a noun, use the attributive der/die/das …ste form.

Forgetting adjective endings on the attributive superlative

*dem schönste Mann → dem schönsten Mann

Superlative adjectives before a noun take weak endings. Dative masculine → -en: dem schönsten Mann.

Over-applying the umlaut to exceptions

*flächer, *fröher → flacher, froher

Flach, froh, klar, schlank, stolz, toll, voll — these one-syllable adjectives do NOT umlaut despite having a/o vowels.