Simple past tense and past participle of snicker.(verb)
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Use "snickered" in a sentence
"Then again, we all kind of snickered at the idea of movies based on Disney rides, and that whole "Pirates of the Caribbean" thing turned out all right."
"When I read the word "snickered" in the NYT account I immediately thought, Mickey Kaus didn't snicker; only Andrew Sullivan snickered!"
"I liked the music and kind of snickered at the politics."