Simple Definition of smug
: having or showing the annoying quality of people who feel very pleased or satisfied with their abilities, achievements, etc.
Examples of smug
Meanwhile, supporters are smug and righteous that the person who manages the world's leading stock exchange deserves every million. —Susan Lee, Wall Street Journal, 10 Sept. 2003
Alice Norcross Pratt, a local stay-at-home mom, is portrayed as smug and pious, yet we also see glimmers of her hidden longings. —Elizabeth Graver, New York Times Book Review, 27 May 2001
Once, Roy dared shooters to beat him with a shot between his legs. Now, he no longer passes out such smug invitations. The goalie who transformed the butterfly technique into an art form has humbly decided to keep his skates a little closer together … —Mark Kiszla, ESPN, 28 May 2001
She was tall and beautiful and multilingual and fiercely opinionated. One of her opinions held that the rags that passed for literary magazines on campus were so smug and tame and insular that it was hopeless to even try to reform them; they simply needed to be replaced. —Tom Perrotta, Joe College, 2000
It's OK to celebrate your success, but try not to be too smug about it.
You can wipe that smug look off your face.
Origin of smug
probably modification of Low German smuck neat, from Middle Low German, from smucken to dress; akin to Old English smoc smock
First Known Use: 1551
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