Sub — synonyms, definition

1. sub (Noun) N. Amer

Cuban sandwich Italian sandwich U-boat aide assistant bomber collateral double fill-in grinder helper hero hero sandwich hoagie hoagy inferior pigboat poor boy proxy stand-in • • •

sub (Noun) — A large sandwich made of a long crusty roll split lengthwise and filled with meats and cheese (and tomato and onion and lettuce and condiments); different names are used in different sections of the United States.

sub (Noun) — A submersible warship usually armed with torpedoes.

Sandwich submersible submersible warship attack submarine auxiliary research submarine fleet ballistic missile submarine nautilus nuclear submarine nuclear-powered submarine Schnorkel asdic breather conning tower echo sounder escape hatch periscope schnorchel snorkel snorkel breather sonar

2. sub (Verb) N. Amer

deputise deputize exchange fill in interchange replace stand in step in

sub (Verb) — Be a substitute. ex. "The young teacher had to sub for the sick colleague"

sub (Verb) — Put in the place of another; switch seemingly equivalent items.

sub (Verb) — Act or speak as a replacement (for someone or something).

alter change exchange interchange modify replace supercede supersede supervene upon supplant cover reduce retool shift subrogate truncate

3. sub (Prefix) N. Amer

sub (Prefix) — Under, lower, below, secondary, inferior.