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swelled head

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noun
  1. an inordinately grand opinion of oneself; conceit.
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Origin of swelled head

First recorded in 1890–95
Related formsswelled-head·ed, adjectiveswelled-head·ed·ness, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for swelled head

swelled head

swollen head

noun
  1. informal an inflated view of one's own worth, often caused by sudden success
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012