IPA: /eɪˈtɪpɪkəlɪti/
KK: /eɪˈtɪpɪkəlɪti/
A state or condition that is not usual or expected.
The atypicality of her behavior raised concerns among her friends.
Atypicality → It is formed from "a-" (meaning not) and "typical" (from Greek "typos", meaning model or pattern) and the suffix "-ity" (meaning the state or condition of). The word "atypicality" refers to the state of being not typical or deviating from the norm.
Think of 'not' ('a-') and 'model' ('typos') to remember that 'atypicality' means the state of being not typical.