in the tank

in the tank

1. Plummeting, as of prices. Housing prices around here are in the tank right now, so I doubt we'll get the price that we want if we sell.
2. Available for use. I always keep an extra box of cereal in the tank for the kids. If you don't eat well before the game, you won't have enough energy in the tank to play well.
3. Very much in favor of someone or something. I'm not in the tank for anyone, I swear—I'm completely neutral!
See also: tank
Farlex Dictionary of Idioms.

in the ˈtank

(American English, informal, business) (about the price of shares, bonds, etc.) falling quickly: Technology stocks are doing well, but everything else is in the tank.
See also: tank
Farlex Partner Idioms Dictionary

in the tank

1. In reserve: a runner who didn't have enough in the tank to hold the lead.
2. In a state of decline or failure: Stocks have been in the tank for months.
3. Enthusiastically partial; strongly favoring: a reporter accused of being in the tank for a candidate.
See also: tank
American Heritage® Dictionary of the English Language, Fifth Edition.
See also:
  • cutthroat prices
  • go sky-high
  • day by day
  • force a/the/(something's) price up
  • tank up
  • tank up (on something)
  • tanked
  • tanked up
  • at a discount
  • discount