overassured

Excessively self-certain

Overassured describes excessive confidence, often to the point of arrogance or self-delusion.

Someone overassured of their abilities may take on challenges they can't handle: He was overassured going into the negotiation and got outmaneuvered.

The word suggests confidence that has tipped past healthy into reckless or unwarranted.

arrogant

cocky

Excessively self-assured

presumptuous · swaggering · boastful · pompous · vainglorious · bumptious · egotistical · immodest · self-important · snooty

reckless

foolhardy

Recklessly bold

careless · incautious · impulsive · hasty · precipitate · unthinking · irresponsible · gung-ho · daredevil · adventurous

complacent

smug

Excessively self-satisfied

nonchalant · blasé · unconcerned · insouciant · contented · imperturbable · placid · lulled · unrealistic · overoptimistic

naive

gullible

Easily deceived

unwary · inexperienced · green · unseasoned · overtrustful · blind · unquestioning · ingenuous · simple · impressionable

Opposites
confidence level

overassuredinsecure

Lacking self-assurance

underconfident · diffident · unconfident · uncertain · doubtful

self-doubt

overassuredself-questioning

Probing one's own thoughts

second-guessing · worried · self-critical · anxious · neurotic

Family

over, assure, assured, assures, assuring, assurance, assurances, reassure, reassured

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Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G