Titter
Titter , transitive verb
[Probably of imitative origin.]
To laugh with the tongue striking against the root of the upper teeth; to laugh with restraint, or without much noise; to giggle.
A group of tittering pages ran before.
Titter , noun
A restrained laugh.
There was a titter of... delight on his countenance.
Titter , intransitive verb
To seesaw. See Teeter.