In answer to my question, he gave a perfunctory nod. The operator answered the call with a perfunctory greeting.

The movie star, who was coerced into the movie because of her contract, gave out perfunctory comments to the media.

Because he made a perfunctory effort on his project, he received a low grade.

He received perfunctory applause, but his performance was not very good.

This is a perfunctory answer - it responds to the question but without thought.

He gave a quick, perfunctory answer to the question and did not bother to elaborate.

in his lectures he reveals himself to be a merely perfunctory speaker.