noun
stuttering; stammering
Medical and everyday term for a speech disfluency. 吃音 is the formal term; どもり is a more colloquial alternative.
彼は吃音の治療を受けている。
He is receiving treatment for stuttering.
吃音は幼児期に発症することが多い。
Stuttering often develops in early childhood.
More colloquial and everyday term for stuttering, while 吃音 is the formal medical term.
Compound of 吃 (kitsu, 'stutter') and 音 (on, 'sound'). The kanji 吃 is used specifically for speech impediments.