titter

Từ điển WordNet v3.1 - WordNet Dictionary

I - noun

a nervous restrained laugh
• Hypernyms:
laugh, laughter

II - verb

laugh nervously (Freq. 2)
- The girls giggled when the rock star came into the classroom
• Syn:
giggle
• Derivationally related forms:
titterer, giggler (for: giggle), giggle (for: giggle)
• Hypernyms:
laugh, express joy, express mirth
• Verb Frames:
- Somebody ----s