IPA: /ˈstʌtərər/
KK: /ˈstʌtərər/
A person who has difficulty speaking fluently, often repeating sounds or syllables.
The stutterer practiced speaking slowly to improve their fluency.
Stutterer → It is formed from "stutter" (of uncertain origin, possibly imitative of the sound of stuttering) and "-er" (meaning a person who). A stutterer is a person who stutters, or has difficulty speaking fluently.
Think of someone who has difficulty speaking fluently, as indicated by the word 'stutter', and remember that the '-er' suffix simply means a person who does that action.