Definition of show off in English:

show off

phrasal verb

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

    • ‘She's worried about making friends and constantly makes up stories about herself and shows off to get attention.’
    • ‘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.’
    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
    draw attention to oneself, blow one's own trumpet
    cop an attitude
    skite, big-note oneself
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