To titter means to laugh or giggle in a somewhat suppressed way.(verb)
An example of to titter is the laugh of a nervous toddler.
The definition of a titter is a nervous and half-hidden laugh.(noun)
An example of a titter is the laugh made by a schoolgirl in class.
See titter in Webster's New World College Dictionary
Origin: of Gmc echoic orig.
See titter in American Heritage Dictionary 4
intransitive verb tit·tered, tit·ter·ing, tit·ters
Origin: Probably imitative.
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