Definitions

1. noun

a short form, especially one used in writing or in abbreviations

“The sub of the story was a condensed version of the original narrative.”

2. noun

a person who is substituting for another person, especially in a job or at work

“The sub will be teaching the class while the regular teacher is on vacation.”

3. noun

a sandwich, especially one served in a deli or restaurant

“I’m going to grab a sub for lunch.”

4. verb

to substitute or act in place of another person

“She will sub for the missing player in the game.”

5. verb

to make something smaller or to reduce the size of something

“The editor tried to sub the article to fit the word limit.”

6. prefix

a prefix meaning ‘under’, ‘below’, or ‘less than’

“Subterranean refers to something that is under the ground.”

7. adverb

in a subordinate or secondary manner

“The team will sub in a new player in the second half.”