Definition of too big for one's boots in English:

too big for one's boots

(also too big for one's breeches)

phrase

informal
  • Conceited.

    • ‘I think that room is appearing again for the little man and people want to say to the big guys that they're getting too big for their boots.’
    • ‘They long ago became just too big for their boots.’
    • ‘If you've got wealth, privilege or exalted connections crowned with success, then in this country you are judged way too big for your boots and in need of an urgent reality check.’
    • ‘He's been getting far too big for his boots recently.’
    • ‘‘He told me never to be too big for your boots and always be friendly to everyone,’ she said.’
    • ‘Basically, they think you're too big for your boots and want you cut down to size.’
    • ‘After his eldest boy's graduation ceremony he said: ‘Don't get too big for your boots, son.’’
    • ‘I don't know how I'm going to get paid, but I'd rather go out into the brave new world than live with dinosaurs that are far too big for their boots.’
    • ‘She has no airs and graces and will put you in check if she thinks you're being too big for your boots - she's done it to me before.’
    • ‘There are plenty of applicants to fill the space left by a boy band who got too big for their boots.’
    conceited, full of oneself, cocky, boastful, arrogant, cocksure, above oneself, self-important, immodest, swaggering, strutting
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