falter

Noun

• the act of pausing uncertainly
  • there was a hesitation in his speech
    

Verb

• speak haltingly
  • The speaker faltered when he saw his opponent enter the room
    

• walk unsteadily
  • The drunk man stumbled about
    

• move hesitatingly, as if about to give way

• be unsure or weak
  • Their enthusiasm is faltering
    

Related words

• Synonyms: 
  hesitation , waver , faltering , bumble , stutter , stammer , stumble