godan verb (-ru), intransitive verb
Describes a speech disfluency where sounds or syllables are repeated or blocked. Used for both temporary and chronic stuttering.
緊張して、最初の言葉をどもってしまった。
I got nervous and stammered on the first word.
彼は小さい頃からどもる癖がある。
He has had a stutter since he was little.