Meaning & use
sub
An informal short form of "substitute," referring to a person or thing that takes the place of another, especially a replacement player.
See it in a sentence
The coach sent in a sub during the second half after the striker got injured.
She worked as a sub at the local elementary school whenever a teacher was out sick.
A note on using this word
"Sub" is also common slang for a submarine and for a long sandwich made on a length of bread, so context determines the meaning.
Words with a similar meaning
Choose a synonym to suit the sentence. Meanings can overlap without being identical.
Another way to use it
2. noun
A large sandwich made on a long roll, typically filled with meat, cheese, and vegetables.
He ordered a turkey sub with extra pickles from the deli.
Make it your own
Write a sentence using “sub”, then compare your use with the examples above.