Synonym: arrogant, boastful, conceited, confident, egotistical, self-satisfied, vain. Similar words: mug, mugger, as much, as much as, transmutation. Meaning: [smʌg] 
adj. marked by excessive complacency or self-satisfaction.
adj. marked by excessive complacency or self-satisfaction. 
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(1) What are you looking so smug about?
(2) She was very smug and self-satisfied about getting the promotion.
(3) Now don't get smug just because you've won a couple of games.
(4) He tried hard not to smile in smug self-satisfaction.
(5) I reckon she has good reason to feel smug.
(6) He was so unbearably smug about winning.
(7) He's been unbearably smug since he gave up smoking.
(8) Take that smug look off your face before I slap you!
(9) 'I knew I'd win,' she said with a smug smile.
(10) There was a hint of smug self-satisfaction in her voice.
(11) He writes smug, sanctimonious waffle.
(12) We shouldn't, however, go home fulfilled, self-satisfied and smug.
(13) I used to be such a smug little prig.
(14) Andy Williams, of course, was always smug and smarmy.
(15) He writes smug, sanctimonious rubbish.
(16) Daley was almost smug as he watched King floundering.
(17) I felt very smug about not wasting paper.
(18) Not to be a trifle smug, or anything.
(19) Frank patted his pocket and smiled, looking awfully smug.
(20) At the risk of sounding smug,[sentencedict.com] my ornamental kitchen garden gave me no such problems.
(21) Theirs was a correction of smug Victorian concepts, a crusade sprung from reactive energies.
(22) Lawson comes over as smug and arrogant, but in fact he's quite a decent man.
(23) Outside, the Talbot Horizon was cooling its smug self after bunny-hopping me through the north London gridlock.
(24) I close the window again with a smug smile on my face, and wait for the next battalion of eager buzzers.
(25) The smug mask of virtue triumphant could be almost as horrible as the face of wickedness revealed. Sentencedict.com
(26) She deserved her promotion, but I wish she wasn't so damned smug about it.
(27) Thomas and his wife looked at each other in smug satisfaction.
(28) He is hapless, passive and maybe just a wee bit smug.
(29) Gesner, sniffing the advance of his adoring fans, suddenly became smug and rather patronizing.
(30) Peter Kemp's aim seems to be to make Wells sound smug.