WordWeb Online

1. Speak haltingly
   "The speaker stammered when he saw his opponent enter the room"
   - bumble, stutter, falter

1. A speech disorder involving hesitations and involuntary repetitions of certain sounds
   - stutter

Derived forms: stammers, stammered, stammering

See also: stammerer

Type of: defect of speech, mouth, speak, speech defect, speech disorder, talk, utter, verbalise [Brit], verbalize

Encyclopedia: Stammer