ist
//ɪst//
suffix
1
A suffix used to form nouns denoting a person who practices, is an expert in, or adheres to a particular doctrine, system, or activity.
She is a talented pianist who has won many competitions.
2
A suffix forming nouns indicating a person who operates or plays a particular instrument or device.
She is a talented pianist who has performed in many countries.
3
A suffix used to form nouns denoting a person characterized by a particular trait or quality.
He is known as a perfectionist because he always pays attention to every detail.