IPA: /pərˈfʌŋk.təri/
KK: /pərˈfʌŋk.tər.i/
Showing little interest or care; done without enthusiasm or attention to detail.
His perfunctory response made it clear he was not really interested in the topic.
Perfunctory → It is formed from "per-" (meaning through) and "functus" (meaning performed or executed). The word describes something done with minimal effort or care, as if merely going through the motions.
Think of doing something 'through' ('per-') just to get it done without much thought or effort — that's why perfunctory means done in a routine or superficial way.