IPA: /ˈæntɪˌtʃeɪm.bər/
KK: /ˈæntɪˌtʃeɪmbər/
A small room that is located before a larger room, often used as a waiting area or entrance.
She waited in the antechamber before being called into the meeting.
Antechamber → It is formed from "ante-" (meaning before) and "chamber" (from Old French *chambre*, meaning room). The word refers to a room that comes before another room, typically serving as a waiting area or entrance.
Think of a room that is 'before' another room — 'ante-' means before, and 'chamber' refers to a room. This helps you remember that an antechamber is a room that precedes another.