sub

From Wiktionary
See also sub-

Pronunciation[change]

Noun[change]

Singular
sub

Plural
subs

  1. (informal) Short for submarine.
  2. (informal) Short for submarine sandwich.
  3. (informal) Short for substitute.
  4. (informal), (UK) Short for subscription.
  5. (slang), (BDSM sex) Short for submissive.

Verb[change]

Plain form
sub

Third-person singular
subs

Past tense
subbed

Past participle
subbed

Present participle
subbing

  1. (US), (informal) To substitute for.
    I subbed for an injured player during last night's game.
  2. (US), (informal) To work as a substitute teacher, especially in primary and secondary education.
    Now that I've retired from my full-time teaching job, I'll do some subbing from time to time to keep busy and earn a little extra money.
    Ms. Smith subs for Mr. Jones' math class when he's sick.
  3. (UK), (informal), (football) To replace (a player) with a substitute.
    He never really made a contribution to the match, so it was no surprise when he was subbed at half time.