Simple past tense and past participle of smug.(verb)
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Use "smugged" in a sentence
"Then we cut to Anne Robinson in the studio: ‘No, but we can’, she smugged."
"It was the smeared red lipstick, smugged black eye makeup and the sweaty looking tassle hair that made her look like she had been "doing something" that I questioned that being said if the kid didn't do something to cool their heels Disney would work that kid to death."
"As it was radio for which he has a good face I couldn't tell whether he was blushing or smirking when he smugged wittily about the discl;osure of MPs second home allowances."