Definition of show off in US English:

show off

phrasal verb

  • Make a deliberate or pretentious display of one's abilities or accomplishments.

    • ‘Sometimes I'd tease my older students about having boyfriends, or get the younger boys to behave by telling them that they should stop showing off to impress their girlfriends, and quickly everyone would fall in line.’
    • ‘She's worried about making friends and constantly makes up stories about herself and shows off to get attention.’
    behave affectedly, put on airs, put on an act, give oneself airs, boast, brag, crow, trumpet, gloat, glory, swagger around, swank, bluster, strut, strike an attitude, strike a pose, posture, attitudinize
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