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1. To physically move beneath something. After you go under the bridge and make a right, you'll see the store up ahead.
2. To fail or become defunct. Our company will go under if we lose money again this quarter.
3. To become unconscious, as from anesthesia. After you go under, you'll wake up in the recovery room.
4. To become submerged. Captain, if this boat takes on any more water, it'll go under!
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
go under(someone or something)
1. to pass beneath someone or something. The boats went under us as we stood on the bridge. The boat went under the bridge.
2. to belong beneath someone or something. That box goes under the bed. All the Christmas presents go under the tree after the children are asleep.
1. to sink beneath the surface of the water. After capsizing, the ship went under very slowly. I was afraid that our canoe would go under in the rapidly moving water.
2. Fig. [for something] to fail. The company went under exactly one year after it opened. We tried to keep it from going under.
3. Fig. to become unconscious from anesthesia. After a few minutes, she went under and the surgeon began to work. Tom went under and the operation began.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
1. Suffer defeat or destruction; fail. For example, We feared the business would go under after the founder died. [Mid-1800s]
2. Lose consciousness. For example, Ether was the first anesthetic to make patients go under quickly and completely. This usage dates from the 1930s.
3. Submerge, sink, as in This leaky boat is about to go under.
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
1. To move to a place beneath something: The dog went under the table.
2. To sink or descend below the surface: The divers went under three times that afternoon. The ship leaked so badly that it finally went under.
3. To fail. Used especially of businesses and enterprises: That big department store went under last year because of the fire.
4. To suffer defeat or destruction: The enemy went under after a long battle.
5. To lose consciousness: The surgeons gave me a strong anesthetic, and I quickly went under.
The American Heritage® Dictionary of Phrasal Verbs. Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
See also: gone
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.