: not feeling or showing satisfaction with oneself or one's position or achievements : not complacent a confident but uncomplacent attitude.

What does it mean if someone is complacent?

Dictionary.com's definition of complacency is “a feeling of quiet pleasure or security, often while unaware of some potential danger, defect, or the like; self-satisfaction or smug satisfaction with an existing situation, condition, etc.”

What does the opposite of complacent mean?

complacent. Antonyms: dissatisfied, irritated, churlish, unmannerly, morose, austere, grudging. Synonyms: pleased, satisfied, content, pleasant, affable, kind, mannerly, acquiescent, amiable.