turn on

(redirected from turn upon)

turn on

1. To enable, connect, or start the function of something. In this usage, a noun or pronoun can be used between "turn" and "on." Would you turn on the water heater for me, please? I need to turn on the lights to see properly.
2. To suddenly attack, berate, or show hostility toward someone. I know he seems friendly, but he'll turn on you in an instant if you disagree with him. The dog turned on its owner, biting him in the leg.
3. To shift or direct the focus of something onto someone or something. In this usage, a noun or pronoun can be used between "turn" and "on." Then the reporter turned the camera on me and started asking me about my involvement. Can you turn the lights on lead actor, please?
4. To depend on or center around someone or something. In this usage, a name, noun, or pronoun can be used between "turn" and "on." Our entire plan turns on them accepting this offer. The plot of the books turns on two brothers during the civil war.
5. slang To increase someone's sexual interest or excitement. In this usage, a name, noun, or pronoun can be used between "turn" and "on." I know it's clichéd, but expensive cars and nice suits really turn me on. Nothing like a bit of mood lighting and good music to turn on a date!
See also: on, turn

turn (up)on someone or something

to attack or oppose someone or something, especially the person or group in charge. (Upon is formal and less commonly used than on.) I never thought that my own dog would turn on me! The treasurer turned on the entire board of directors.
See also: on, turn

turn someone on

to excite or interest someone. Fast music with a good beat turns me on. That stuff doesn't turn on anyone.
See also: on, turn

turn something on

to switch on something to make it run. I turned the microwave oven on and cooked dinner. I turned on the lights when the sun went down.
See also: on, turn

turn on someone

to attack someone. I thought the strange dog was friendly, but suddenly it turned on me and bit me. Bob knows a lot about lions, and he says that no matter how well they are trained, there is always the danger that they'll turn on you.
See also: on, turn

turn on

 
1. Lit.[for something] to switch on and start running. The lights turned on right at dusk. At what time do the street lights turn on?
2. Fig. to become interested or excited. He turns on when he sees the mountains. Ann will turn on if she hears this song.
See also: on, turn

turn on

1. Cause to begin the operation, flow, or activity of, as in Turn on the lights, please, or Don't turn on the sprinkler yet. [First half of 1800s]
2. Begin to display, employ, or exude, as in He turned on the charm. [Late 1800s]
3. Also, get high or on . Take or cause to take a mind-altering drug, as in The boys were excited about turning on, or They tried to get her high, or I told them I wouldn't get on tonight. [Slang; mid-1900s]
4. Be or cause to become excited or interested, as in His mother was the first to turn him on to classical music. [c. 1900]
5. Be or become sexually aroused, as in He blushed when she asked him what turned him on. [Second half of 1900s]
6. Also, turn upon. Depend on, relate to, as in The entire plot turns on mistaken identity. This usage, first recorded in 1661, uses turn in the sense of "revolve on an axis or hinge."
7. Also, turn upon. Attack, become hostile toward, as in Although normally friendly, the dog suddenly turned on everyone who came to the door. Also see turn against.
See also: on, turn

turn on

v.
1. To suddenly aim or focus something on someone or something: She turned the camera on the speaker. He turned the gun on himself.
2. To attack someone or something suddenly and violently with no apparent motive: The lion turned on the animal trainer.
3. To become disloyal toward someone that one was once loyal to: After years as an assistant, I turned on my boss and told the authorities about his tax evasion.
4. To depend on someone or something for success or failure: The campaign turns on attracting swing voters.
5. To start the operation, activity, or flow of something by or as if by turning a switch: Turn on the light bulb. Turn the generator on.
6. To begin instantly to display, employ, or exude some affectation: She turned on the charm. He turns a fake accent on when he doesn't want to be recognized.
7. Slang To take a mind-altering drug, especially for the first time: They turned on and passed out at the party.
8. Slang turn on to To cause to become interested, pleasurably excited, or stimulated by something: My aunt turned me on to jazz.
9. Slang turn on to To be interested, pleasurably excited, or stimulated by something: She turned on to surfing this summer.
10. Vulgar Slang To excite someone sexually.
See also: on, turn

turn on

1. in. to become interested or excited. She turned on when she heard her name called.
2. in. to take a drug. (Drugs.) He will turn on with anybody at the drop of a hat.
3. n. someone or something that excites someone. (Usually turn-on.) David can be a real turn-on when he’s in a good mood.
See also: on, turn

turned on

1. mod. made alert to what is new and exciting. I want to hire someone who’s really turned on—a real comer. A young, turned on MBA would be just right.
2. mod. drug intoxicated. (Drugs.) Jerry’s turned on by noon—every day. The kid over there looks sort of turned on. Let’s go talk to him a bit.
See also: on, turn
References in classic literature ?
Two parts, then, of the Plot--Reversal of the Situation and Recognition-- turn upon surprises.
Certainly, it is heaven upon earth, to have a man's mind move in charity, rest in providence, and turn upon the poles of truth.
It was evident that they could not comprehend why it was that this savage brute did not turn upon me and rend me.
For a dog to attack another, it would have to turn upon one at a shorter rope.
At first he had been prone to turn upon his pursuers, jealous of his dignity and wrathful; but at such times Mit-sah would throw the stinging lash of the thirty-foot cariboo-gut whip into his face and compel him to turn tail and run on.
Jake Quickenden, the bookies' clear favourite to triumph, said he'd enjoy a session with the This Morning presenters, who have been known to turn upon set with terrible hangovers.
In particular I was struck by the ending: "It does not vent its loathing, does not turn Upon its makers with destroying hate.
Though these forces have to date received air support from the US and Britain, it's easy to prophesy that once the battle against ISIS has been won the West will turn upon them.
The first substantial narrative to deeply explore the latter decades of her reign, Elizabeth: The Forgotten Years zooms in on a critical period in Tudor history, providing a fascinating close-up of an aging queen taking her final turn upon the world stage.
Sadly the working classes do not ght the government cuts at the ballot box but turn upon each other.
It is better for capitalism if we are all fighting among ourselves, blaming each other for the world's problems, because otherwise we would turn upon the real culprits.
We are screwed with Pardew at the helm as his total self-belief has clearly rubbed off on the squad who no doubt will think all they need to do is turn upon Saturday and they will spank Leicester.
People can turn upon the day or register their interest by calling 024 7615 0688.
AS the eyes of the world turn upon Britain, now may be the time to engage not only the global audience but, perhaps more pertinently, the British public with our "green and pleasant land".
I much fear that the spirit which you have aided to infuse into the Army, of criticising their Commander, and withholding confidence from him, will now turn upon you.