#1 falter v. [waver] be unsure or weak; "Their enthusiasm is faltering". wn
#2 falter v. [waver] move hesitatingly, as if about to give way. wn
#3 falter v. [stumble, bumble] walk unsteadily; "The drunk man stumbled about". wn
#4 falter v. [bumble, stutter, stammer] speak haltingly; "The speaker faltered when he saw his opponent enter the room". wn
#5 falter n. [hesitation, waver, faltering] the act of pausing uncertainly; "there was a hesitation in his speech". wn
vizzz