noun / verb
snicker
SNIK-ur/ˈsnɪkər/
A quiet, mocking or suppressed laugh.
He hides a mocking snicker behind his hand.

Etymology
The word originally described a half-suppressed laugh and may imitate its sound. In this sense, the restrained laughter conveys mockery or disrespect.
More examples
- He snickered at the unfortunate remark.
- She tried to suppress a snicker.
- The students were snickering over a private joke.
Forms
snicker · snickers · snickered · snickering