To do something perfunctorily is to do it because you have to, as a formality, often in a careless way.

A perfunctory action is a formality: you do it because you have to, but you might not care if you do a good job. Similarly, to do something perfunctorily is to get it done without giving it much attention. A referee who does his job perfunctorily probably misses many calls. A teacher who teaches perfunctorily may grade student papers without reading them. A politician may shake hands perfunctorily, since he has to do it so often.

Definitions of perfunctorily

adv in a set manner without serious attention

“he kissed her cheek perfunctorily
as a formality, pro forma

Sign up, it's free!

Whether you're a student, an educator, or a lifelong learner, can put you on the path to systematic vocabulary improvement.