verb (used without object)
- to laugh in a restrained, self-conscious, or affected way, as from nervousness or in ill-suppressed amusement.
- a tittering laugh.
- (intr) to snigger, esp derisively or in a suppressed way
- (tr) to express by tittering
- a suppressed laugh, chuckle, or snigger
v.1610s, “giggle in a suppressed or covert way,” probably of imitative origin. Related: Tittered; tittering. The noun is first recorded 1728.