/ kəmˈpleɪsnt; NAmE / adjective
complacent (about sb/sth) (usually disapproving ) too satisfied with yourself or with a situation, so that you do not feel that any change is necessary; showing or feeling complacency :
a dangerously complacent attitude to the increase in unemployment
We must not become complacent about progress.
► com·pla·cent·ly adverb
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WORD ORIGIN
mid 17th cent. (in the sense pleasant ): from Latin complacent- pleasing, from the verb complacere .