IPA: /lɪˈbrɛtɪst/
KK: /lɪˈbrɛtɪst/
A person who writes the text for an opera or other musical work.
The famous composer collaborated with a talented librettist to create a new opera.
**Librettist** → It is formed from "libretto" (from Italian *libretto*, meaning a little book or text) and "-ist" (meaning a person who practices or is concerned with). A librettist is a person who writes the text for an opera or other musical work, essentially creating the little book that accompanies the music.
Think of a 'little book' ('libretto') that contains the words for a musical piece, and remember that a librettist is the person who writes that book.
No commonly confused words.