IPA: /əˈkɔːrdiənɪst/
KK: /əˈkɔrdjənɪst/
A person who plays a musical instrument called the accordion, which has keys and bellows.
The accordionist played beautifully at the festival.
Accordionist → It is formed from "accordion" (from the German *Akkordeon*, meaning a musical instrument that produces sound by forcing air through reeds) and "-ist" (meaning a person who practices or is concerned with something). An accordionist is a person who plays the accordion.
Think of someone who plays a musical instrument called an accordion — the suffix '-ist' indicates that this person is a practitioner of that instrument.
No commonly confused words.