IPA: /ˌæntiˈpoʊɪtɪk/
KK: /æntiˈpoʊɪtɪk/
Describing something that is against or does not follow the usual styles and techniques of poetry.
His writing style is very antipoetic, lacking the rhythm and imagery typical of traditional poems.
Antipoetic is formed from "anti-" (meaning against) and "poetic" (from Greek "poetikos", meaning relating to poetry). The word describes something that is against or contrary to the nature of poetry.
Think of 'anti-' meaning against, and 'poetic' relating to poetry — this helps you remember that 'antipoetic' refers to something that goes against the essence of poetry.