complacent

Definition

Showing smug or uncritical satisfaction with oneself or one's achievements; self-satisfied in a way that prevents further effort or improvement. Often implies dangerous overconfidence.

Etymology

From Latin 'complacere' meaning 'to be very pleasing,' from 'com-' (intensive) and 'placere' (to please). The word evolved from meaning 'pleased' to implying excessive self-satisfaction.

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