too big for one's britches

English

Alternative forms

• too big for one's breeches

Etymology

US origin, 19th c.

Pronunciation

• Audio (General Australian):

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Adjective

too big for one's britches (not comparable)

1. (idiomatic) Disturbingly confident, unacceptably cocky.

   Synonym: too big for one's boots

   • 1989 May 22, Edwin M. Reingold, “Hard Times for Teflon Tom”, in Time:

     A diffident, dedicated man, Bradley seemed the personification of rectitude. He never got too big for his britches.

2. Used other than figuratively or idiomatically: Too large to fit into one's pants.