snigger

Universal Words verb, noun verb (BrE) (also snicker AmE, BrE) ~ (at sb/sth) to laugh in a quiet unpleasant way, especially at sth rude or at sb's problems or mistakes: [V] What are you sniggering at? [also Vspeech] noun (BrE) (also snicker AmE, BrE) a quiet unpleasant laugh, especially at sth rude or at sb's problems or mistakes