too big for boots



too big for your boots

  (British, American & Australian informal) also too big for your britches (American informal)
someone who is too big for their boots behaves as if they are more important or more clever than they really are Since he was made team captain, he's been ordering us all around and generally getting much too big for his boots.
See also: big, boot

Common Names:

NameGenderPronouncedUsage
Antinancoan-tee-NAWN-koNative American, Mapuche
Dacianadah-CHYAHN-ahRomanian
JooseppiYO:-sep-peeFinnish
Harding['ha:diŋ]
Gretchen['gretʃən]
Delshad-Persian