Dictionary.com
Thesaurus.com
Synonyms

sub.

1 American  

abbreviation

  1. subordinated.

  2. subscription.

  3. substitute.

  4. suburb.

  5. suburban.

  6. subway.


sub 2 American  
[suhb] / sʌb /

noun

  1. a submarine.

  2. a substitute.

    We've got a sub in English this week because our teacher's home with the flu.

  3. a submarine sandwich.

  4. a submissive in a BDSM sexual encounter or relationship.

  5. a subcontractor.

  6. a sublieutenant.

  7. a subordinate.

  8. a subaltern.

  9. British. an advance against one's wages, especially one granted as a subsistence allowance.

  10. Photography. a substratum.


verb (used without object)

subbed, subbing
  1. to act as a substitute for another.

  2. to act as the submissive partner in a BDSM sexual encounter or relationship.

verb (used with object)

subbed, subbing
  1. Photography. to coat (a film or plate) with a substratum.

SUB 3 American  

abbreviation

  1. supplemental unemployment benefits.


sub- 4 American  
  1. a prefix occurring originally in loanwords from Latin (subject; subtract; subvert; subsidy ); on this model, freely attached to elements of any origin and used with the meaning “under,” “below,” “beneath” (subalpine; substratum ), “slightly,” “imperfectly,” “nearly” (subcolumnar; subtropical ), “secondary,” “subordinate” (subcommittee; subplot ).

  2. Chemistry.

    1. a prefix indicating a basic compound.

      subacetate; subcarbonate; subnitrate.

    2. a prefix indicating that the element is present in a relatively small proportion, i.e., in a low oxidation state.

      subchloride; suboxide.


sub- 1 British  

prefix

  1. situated under or beneath

    subterranean

  2. secondary in rank; subordinate

    subeditor

  3. falling short of; less than or imperfectly

    subarctic

    subhuman

  4. forming a subdivision or subordinate part of a whole

    subcommittee

    1. indicating that a compound contains a relatively small proportion of a specified element

      suboxide

    2. indicating that a salt is basic salt

      subacetate

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

sub. 2 British  

abbreviation

  1. subeditor

  2. subito (in music)

  3. subscription

  4. substitute

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

sub 3 British  
/ sʌb /

noun

  1. short for several words beginning with sub- See subaltern subeditor submarine subordinate subscription substandard substitute substratum

  2. Formal term: subsistence allowanceinformal an advance payment of wages or salary

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

verb

  1. (intr) to serve as a substitute

  2. informal (intr) to act as a substitute (for)

  3. informal to grant or receive (an advance payment of wages or salary)

  4. informal (tr) short for subedit

  5. (tr) photog to apply a substratum to (a film or plate base)

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
sub– Scientific  
  1. A prefix that means “underneath or lower” (as in subsoil), “a subordinate or secondary part of something else” (as in subphylum.), or “less than completely” (as in subtropical.)


Regionalisms

See hero sandwich.

Etymology

Origin of sub1

By shortening of words prefixed with sub-

Origin of sub-1

< Latin, combining form representing sub (preposition); akin to Greek hypó; hypo-

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

You can go maximalist — an Alison Roman–style ham party, complete with pickled vegetables, fancy mustard and crusty bread — or you can go blissfully minimal with a giant sub sliced into generous hunks.

From Salon

“While the headline index is still at a level that historically has been consistent with weak sub 2% growth, growth has been stronger than implied by the index for the past three years.”

From Barron's

During climactic scenes he pumped thousands of gallons of fake blood through the sub.

From The Wall Street Journal

Plus, we have a sub—a bald guy with legs like kindling sticks and his name safety-pinned to his shirt like a kindergartener whose mom thought he might forget.

From Literature

As the sub dropped below 200 metres, the last traces of light disappeared, and indigo faded into total darkness.

From Barron's