perfunctorily
UK: /pəˈfʌŋktərəli/ | US: /pərˈfʌŋktərəli/
adv. in a manner lacking interest, effort, or enthusiasm; done merely as a routine duty
The word "perfunctorily" derives from the adjective "perfunctory," which originates from the Latin perfunctus (past participle of perfungi, meaning "to accomplish" or "to get through with"). The Latin roots break down into per- (thoroughly) + fungi (to perform). Over time, "perfunctory" evolved to imply a superficial or mechanical completion of tasks, and the adverbial suffix -ly was added to form "perfunctorily," describing actions done without genuine engagement.
She answered the questions perfunctorily, barely looking up from her phone.
The clerk greeted customers perfunctorily, his mind clearly elsewhere.
His apology sounded perfunctorily delivered, lacking sincerity.
The teacher graded the papers perfunctorily, missing several errors.
The speech was written perfunctorily, with no attempt to inspire the audience.