Falter
From BiblePortal Wikipedia
Falter [1]
(1): ( v. t.) To thrash in the chaff; also, to cleanse or sift, as barley.
(2): ( v. t.) To utter with hesitation, or in a broken, trembling, or weak manner.
(3): ( v. i.) Hesitation; trembling; feebleness; an uncertain or broken sound; as, a slight falter in her voice.
(4): ( v. & n.) To hesitate; to speak brokenly or weakly; to stammer; as, his tongue falters.
(5): ( v. & n.) To tremble; to totter; to be unsteady.
(6): ( v. & n.) To hesitate in purpose or action.
(7): ( v. & n.) To fail in distinctness or regularity of exercise; - said of the mind or of thought.