Submarine

Pronunciation

• Rhymes: -iːn

Origin

- + marine

Full definition of submarine

Adjective

1. undersea.
2. Hidden or undisclosed.a submarine patent

Synonyms

• subaquatic, subaqueous

Noun

1. A boat that can go underwater.
2. A kind of sandwich made in a long loaf of bread.
3. (baseball) Pitch delivered with an underhand motion.
4. Any submarine plant or animal.
5. (informal) A stowaway on a seagoing vessel.

Synonyms

• (boat) U-boat
• (sandwich) grinder, hero, hoagie, hoagy, poor boy, po' boy, sub, submarine sandwich, torpedo, wedge

Antonyms

• (boat) surface ship

Related terms

• submariner

Verb

1. To operate or serve on a submarine
2. To torpedo; to destroy with a sudden sneak attack
• 2007, April 13, The Associated Press, Shares Up as Investors Ponder Retail Data, “We’re really at the point of chicken, where the Fed is trying to ward off inflation without submarining the economy.”