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Noun: titter  ti-tu(r)
  1. A nervous restrained laugh
    "A titter ran through the classroom when the teacher mispronounced the word"
Verb: titter  ti-tu(r)
  1. Laugh nervously
    "The girls tittered when the rock star came into the classroom";
    - giggle

Derived forms: titters, tittering, tittered

Type of: express joy, express mirth, laugh, laughter

Encyclopedia: Titter