Definitions

1. noun

A substitute, especially a person or thing that takes the place of another in a musical performance, such as a cover song.

“The band chose to use a subst for the song that the lead singer couldn’t perform.”

2. verb

To substitute or replace something.

“The manager decided to subst the broken equipment with a new one.”

3. verb

To substitute or replace oneself.

“She decided to subst herself for her colleague at the meeting.”

4. prefix

A combining form meaning ‘substitute’ or ‘to substitute’.

“The word substitutable is an example of the use of the prefix subst-.”