complacent
🇺🇸
/kəmˈpleɪsnt/
🇬🇧
/kəmˈpleɪsnt/
adjective
R
too satisfied with yourself or a situation, so you don't think change is needed
The team became complacent after winning and stopped practicing hard.
チームは勝利した後に自己満足に陥り、懸命な練習をやめてしまった。
translation
自己満足の；満足した