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Verb: sub (subbed,subbing)  súb
  1. Be a substitute
    "The young teacher had to sub for the sick colleague";
    - substitute, stand in, fill in
  2. Put in the place of another; switch seemingly equivalent items
    - substitute, replace, interchange, exchange
  3. Act or speak as a replacement (for someone or something)
    - substitute, deputize, deputise [Brit], step in
Noun: sub  súb
  2. A submersible warship usually armed with torpedoes
    - submarine, pigboat, U-boat
Prefix: sub-  súb
  1. Under, lower, below, secondary, inferior
    - under-

Derived forms: subs, subbed, subbing

Type of: alter, change, exchange, interchange, modify, replace, sandwich, submersible, submersible warship, supercede [non-standard], supersede, supervene upon, supplant

Encyclopedia: Sub