1. a person who titters; one who laughs in a nervous, restrained, or silly manner

Examples

• The nervous titterer in the back row disrupted the serious presentation.
• She was known as a chronic titterer who couldn’t help but giggle at inappropriate moments.
• The teacher silenced the titterer with a stern look.
• Every classroom has at least one titterer who finds everything amusing.
• The titterer’s nervous laughter made everyone else uncomfortable.
• He was embarrassed to be labeled the office titterer.