complacent

/kəmˈpleɪsənt/adjective

So pleased with yourself or your success that you stop trying to improve or notice risks.

Example sentence

“Winning three years in a row made the team complacent.”

Do not confuse with 'complaisant', which means eager to please. Complacency is smugness; complaisance is obligingness.

Related words

compliantMeeting the requirements of rules, standards, or laws.compileTo create something by collecting and combining material from different places.complyTo do what a rule, request, or order requires; to agree and go along with something.competentHaving enough skill, knowledge, or qualifications to do something properly.composedTo create a whole by putting separate parts together.competeTo take part in a contest and try to win something, such as a prize or position, that others also want.