a feeling of satisfaction with oneself or achieved goals that can lead to a lack of awareness of potential dangers or deficiencies
example
His complacency after achieving the promotion blinded him to the challenges that lay ahead, making him underestimate his competitors.
synonyms
self-satisfactionsmugnesscontentment
word origin — from Latin 'complacere' meaning 'to please very much, to please entirely'
SAT Vocabulary Level 2 — Set 152
Set 152 of SAT Vocabulary Level 2 covers 5 words: complacency, pariah, ascent, reconnaissance, relic. Each entry below includes its definition, an example sentence, and synonyms — practice them with the interactive cards above.
complacency · noun/kəmˈpleɪ.sən.si/
a feeling of satisfaction with oneself or achieved goals that can lead to a lack of awareness of potential dangers or deficiencies
His complacency after achieving the promotion blinded him to the challenges that lay ahead, making him underestimate his competitors.