under control

under control

1. In a state in which the elements of a situation are functioning or occurring as they are desired or required; managed or handled such that the desired conditions continue. The babysitter said that the kids are already in bed and that everything is under control. That leak still isn't under control. We really ought to call a plumber.
2. Subject to one's authority, force, or influence. In this usage, a possessive pronoun can be used between "under" and "control." I'm not under your control—I'll do as I like! She has fought long and hard to get the company back under her control. Now that the region is under the dictator's control, many fear for the safety of its citizens.
See also: control
Farlex Dictionary of Idioms.

*under control

Fig. manageable; restrained and controlled; not out of control. (*Typically: be ~; bring someone or something ~; get someone or something ~; have someone or something ~; keep someone or something ~.) We finally got things under control and functioning smoothly. The doctor felt she had the disease under control and that I would get well soon.
See also: control
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • be under control
  • be under par
  • wishcast
  • wishcasting
  • on the rails
  • a stepping stone
  • deliver the goods
  • along the right lines
  • an embarrassment of riches
  • embarrassment
References in periodicals archive
But so long as this "noise" remains small, a controlled system, kept in line by a constant stream of nudges, stays under control. "You can achieve control even in the face of noise and imperfect measurements," Grebogi says.
Ribbons of chaos: researchers develop a lab technique for snatching order out of chaos
Your sand system isn't under control. Before you go any further, go over your sand system--the equipment, materials and operators' training--to find out what's wrong.
At the bottom you see a chart which shows that the data falls within a narrow range (narrow enough that you can be pretty sure that you have the process under control), but in the wrong place.
SPC for small to medium foundry's sand system
By now, two generations of New Yorkers have grown up under controls. "Politically it's an impossible issue, not one the voters can understand, even though controls are an anachronism,' says David Garth, the political consultant who has managed campaigns for Mayor Koch and former Governor Hugh Carey.
There's nothing liberal about rent control