IPA: //eɪˈtɪpɪkəl//
KK: /eɪˈtɪpɪkəl/
This word describes something that is not usual or does not follow the common pattern.
Her behavior was atypical for someone in her position.
Atypical → It is formed from "a-" (meaning not) and "typical" (from Greek "typos", meaning model or type). The word "atypical" means not conforming to the usual type or model.
Think of 'not' ('a-') being combined with 'model' ('typos') to remember that 'atypical' describes something that does not fit the usual model.