1. (

• falter ,
• waver ,

) be unsure or weak; "Their enthusiasm is faltering" ;

2. (

• falter ,
• waver ,

) move hesitatingly, as if about to give way ;

3. (

• stumble ,
• falter ,
• bumble

) walk unsteadily; "The drunk man stumbled about" ;

4. (

• bumble ,
• stutter ,
• stammer ,
• falter

) speak haltingly; "The speaker faltered when he saw his opponent enter the room" ;