Anap(a)estic: an ictosyllabic form of metre in which each beat (see prosody) is typically preceded by two offbeats (a combination traditionally called an anapaest):
. . *| . . * | . . * | . . *
For a la|ggard in love, |and a das|tard in war,
. . * | . . *| . . * | . . *
Was to wed |the fair E|llen of brave |Lochinvar
(Scott, “Lady Heron's Song”)