Synonyms of 'puffed up'
He was too puffed up with his own importance.
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What an arrogant, bigheaded man, she thought.
She has a reputation for being proud and arrogant.
high and mighty (informal)
toffee-nosed (slang , British)
too big for your boots or breeches
Thesaurus for puffed up from the Collins English Thesaurus
If you describe someone as puffed up , you disapprove of them because they are very proud of themselves and think that they are very important.