[kiryandil]

1640s, from French complaisant (16c.), in Middle French, "pleasing," present participle of complaire "acquiesce to please," from Latin complacere "be very pleasing" (see complacent, with which it overlapped till mid-19c.). Possibly influenced in French by Old French plaire "gratify."

It's a Frenchy thing.

[Gaffer]

Yes....I guessed that from the ‘lais’ part. It still isn’t a word I think I’ll ever use.