IPA: /ˈɪm.pæs/
KK: /ˈɪmˌpæs/
A situation where no progress can be made, often due to disagreement or obstacles; a deadlock.
The negotiations reached an impasse, and both sides could not agree on the terms.
Impasse → It is formed from "in-" (meaning not) and "passer" (from Old French, meaning to pass). The word describes a situation where one cannot pass or move forward, indicating a deadlock or stalemate.
Think of a situation where you cannot 'pass' ('passer') — the 'in-' means not, so an impasse is a point where you cannot move forward.