Main Entry: ¹flut·ter

Pronunciation: \ˈflə-tər\

Function: verb

Etymology: Middle English floteren to float, flutter, from Old English floterian, frequentative of flotian to float; akin to Old English flēotan to float — more at fleet

Date: before 12th century

intransitive verb 1 : to flap the wings rapidly
2 a : to move with quick wavering or flapping motions b : to vibrate in irregular spasms
3 : to move about or behave in an agitated aimless mannertransitive verb : to cause to flutter

— flut·ter·er \-tər-ər\ noun

— flut·tery \-tər-ē\ adjective