swollen head

Collins Concise English Dictionary © HarperCollins Publishers::

swollen head noun

1. a variant of swelled head

WordReference Random House Unabridged Dictionary of American English © 2026

swelled′ head′, 

1. an inordinately grand opinion of oneself;
   conceit.

• 1890–95

swelled′-head′ed, adj. 
swelled′-head′ed•ness, n. 

Collins Concise English Dictionary © HarperCollins Publishers::

swelled head, swollen head noun

1. an inflated view of one's own worth, often caused by sudden success