Complaisant means eager to please and to go along with others. A complaisant husband, complaisant and agreeable, too complaisant by half.
It is a different word from complacent, which means smugly satisfied, and the pair is confused constantly. It carries a hint of going along with things that should have been resisted.
1adjectivecomplaisantEager to please and to go along with others.
“The complaisant clerk agreed to every demand, however unreasonable.”
complaisant is a quality.
Also accepted in games: accommodating
French complaisant comes from complaire, to please, from Latin complacere.
Latin
complaceō — please well
French
complaisant — willing to please
English, today
complaisant
Built from
From French complaisant (“willing to please”), from complaire, from Latin complaceō (“please well”), from com- (“with”) + placeō (“please”).
Etymology from Wiktionary, CC BY-SA