Meaning & use
sub
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Meanings
nouncountablesport
A person who takes the place of another, especially a replacement player in a team game or a stand-in teacher.
Grammar: Short for substitute: the coach sent on a sub.
Patterns
- come on as a sub
- a sub for someone
The coach brought on a sub at halftime to give the defenders a rest.
We had a sub in math class because our teacher was ill.
She was a late sub in the relay team.
nouncountableAmerican
A long sandwich made with a roll and filled with meat, cheese and vegetables.
Grammar: Common in American English: a turkey sub.
Patterns
- a sub with something
He ordered a meatball sub with extra cheese.
We picked up two subs for lunch on the road.
The deli makes a good veggie sub.
nouncountable
A submarine, a ship that travels underwater.
Grammar: Short for submarine, mostly in casual speech.
Patterns
- a nuclear sub
The sub stayed under the ice for three weeks.
He served on a navy sub as a young man.
The film follows a crew trapped in a damaged sub.
nouncountableBritish
A short form for subscription, a regular payment for a service or magazine.
Grammar: Informal; often plural: renew your subs.
Patterns
- pay a sub
The club asks members to pay their sub in January.
She cancelled her sub to the magazine.
Annual subs are due at the end of the month.
verbtransitive or intransitive
To act as a replacement for someone, or to put a replacement in their place.
Grammar: Often followed by for or in: sub for a sick colleague.
Patterns
- sub for someone
- sub someone in
I'm subbing for Maria while she's on holiday.
The coach subbed off the tired winger.
Can you sub in for me at the meeting on Friday?
Word forms
| plural | subs |
|---|---|
| third person singular | subs |
| past tense | subbed |
| past participle | subbed |
| -ing form | subbing |
Common combinations
- come on as a sub
- He came on as a sub in the second half.
- substitute teacher
- Our sub teacher played a video.
- turkey sub
- I'll have a turkey sub with mustard.
- sub for someone
- Can you sub for me on Tuesday?
- nuclear sub
- The nuclear sub surfaced near the port.
- sub on a bench
- He started the game as a sub on the bench.
Synonyms and how they differ
- substitute
- Substitute is the full and more formal form, so it suits written reports better than sub.
- replacement
- Replacement suggests a lasting change, while a sub is often temporary.
- stand-in
- A stand-in covers an absent person, often outside sport, such as in a film or office.
- hoagie
- Hoagie is a regional American word for the long sandwich, mainly used in the northeast.
Opposites
Word family
- substitute noun
- a person or thing that takes another's place
- substitution noun
- the act of replacing one thing with another
- submarine noun
- an underwater vessel
- subscription noun
- a regular payment for a service
Commonly confused: sub or sob?
sub vs sob
Sob means to cry noisily, and only differs from sub by one letter, so check your spelling.
Practice
Our regular teacher was away, so a ___ taught the class today.
Choose one answer.
Sub is the casual short form of substitute teacher. Stub is a short remaining piece, so it does not describe a person who replaces a teacher.
Make it your own
Write a sentence using “sub”, then check it and compare it with the examples above.