
-los is one of the B1 words in the free course — with this picture, the audio, and spaced repetition.
-los
suffix meaning 'without'
/ˌloːs/Examples — -los in a sentence
Das WLAN ist hier komplett kostenlos.
The Wi-Fi here is completely free.
Er fühlte sich machtlos in dieser Situation.
He felt powerless in this situation.
How to remember it
LOS sounds like 'loss' — if something is '-LOS', it means it has suffered a 'loss' of that thing, so it is without it.