T0238500 (tĭt′ər)intr.v.tit·tered, tit·ter·ing, tit·ters To laugh in a restrained, nervous way; giggle.n. A nervous giggle.[Probably imitative.]tit′ter·er n.tit′ter·ing·ly adv.Thesaurus
Noun
1.
titterer - a person who laughs nervouslygigglerlaugher - a person who is laughing or who laughs easily