Word Origin & History
jitterbug"swing dance," 1938, Amer.Eng., from Jitter bug, title of a song recorded by Cab Calloway in 1934. Related to jitters (pl.) "extreme nervousness," 1925, Amer.Eng., perhaps an alteration of dial. chitter "tremble, shiver," from M.E. chittern "to twitter, chatter." Jittery is 1931, Amer.Eng.