- The definition of a titter is a nervous and half-hidden laugh.
An example of a titter is the laugh made by a schoolgirl in class.
- To titter means to laugh or giggle in a somewhat suppressed way.
An example of to titter is the laugh of a nervous toddler.
Origin of titterof Germanic echoic origin, originally
intransitive verbtit·tered, tit·ter·ing, tit·ters
Origin of titterProbably imitative.