IPA: /ˈeɪpɪʃnəs/
KK: /ˈeɪpɪʃnəs/
The quality of behaving in a silly or foolish way, often imitating someone else.
His apishness during the meeting made everyone laugh, but it also annoyed some of his colleagues.
Apishness is formed from "apish" (from Middle English "apeish", meaning resembling an ape) and the suffix "-ness" (meaning the state or quality of). The word "apishness" refers to the quality of being like an ape, often implying foolishness or mimicry.
Think of the word 'ape' in 'apish' to remember that 'apishness' means the quality of being like an ape, often in a silly or foolish way.