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1. Finished with one's work for the day. Often followed by the word "work." I'll be off at 6, if you want to meet me then. I need to get these presents wrapped before my wife gets off work.
2. Not attending work or school. I can't wait to be off on my vacation next month. I'm off for two weeks for Christmas, so we'll definitely hang out then!
3. Not correct or accurate. Often followed by "on (something)." The measurements were a bit off, so the shelves don't fit quite right. Sorry, your guess was way off! They were off on their initial valuation by several hundred thousand dollars.
4. Having begun something. Often followed by "on (something)." Dad's off on another mission to protect us innocent kids from violence in the media. I heard you're travelling to India—when are you heading off?
5. Travelling (to some place). We're off to the Bahamas for the next two weeks! I heard you're travelling to India—when are you heading off?
6. verb To kill someone, especially as a means of silencing or disposing of them. In this usage, the term is usually followed by a noun or pronoun. The gang offed the accountant before he could use his knowledge as leverage with the district attorney. I puked my guts out the first time I offed somebody, now it feels like second nature.

*off (work)

 and off from work; off of work 
1. having left one's work at the end of the day. (*Typically: be ~; get ~.) What time do you get off from work? I get off work about five o'clock. She gets off from work later than I do.
2. absent from one's work with permission. (*Typically: be ~; get ~.) I think I can get off of work so I can go to the doctor. Sorry, I can't join you. Things are busy at the office, and I can't get off.


 (on something)
1. incorrect in one's planning or prediction. (*Typically: be ~; get ~.) I was off on my estimates a little bit. I guess I was off too much.
2. to have started on something, such as a task or a journey. (*Typically: be ~; get ~.) What time should we be off on our trip? We should be off by dawn. I'm off on my diet again.
3. Sl. to get high on some kind of drug. Max likes to get off on marijuana.

off on someone or something

in a rage about someone or something; on a tirade about someone or something. Are you off on Sally again? Why can't you leave her alone?
See also: off, on


1. mod. alcohol or drug intoxicated. She is truly off.
2. tv. to dispose of someone or something; to kill someone. The crooks offed the witness before the trial.
3. in. to die. (see also outed.) The guy just falls down and offs, right there on Main Street.


See outed
See also: off


/out of (one's) gourd Slang
Very foolish; crazy.


/out of plumb
Not vertical.
References in classic literature ?
In a dim way I heard a rifle go off and continue to go off.
After their first rush to get me, when about a dozen had dropped, they seemed paralyzed; but he never left off pumping his gun.
I thought everything was over then, when I heard the rifle go off again.
When I used to wear it, if I fell off the horse, it always touched the ground directly.
And then he took the helmet off again--but it took hours and hours to get me out.
You've only a few yards to go,' he said,' down the hill and over that little brook, and then you'll be a Queen-- But you'll stay and see me off first?
The guard had just finished an account of a desperate fight which had happened at one of the fairs between the drovers and the farmers with their whips, and the boys with cricket-bats and wickets, which arose out of a playful but objectionable practice of the boys going round to the public-houses and taking the linch-pins out of the wheels of the gigs, and was moralizing upon the way in which the Doctor, "a terrible stern man he'd heard tell," had come down upon several of the performers, "sending three on 'em off next morning in a po-shay with a parish constable," when they turned a corner and neared the milestone, the third from Rugby.
That autumn he left the beach as soon as he could, and set off alone because of a notion in his bullet-head.
Or else he could see that seals had once visited the island and been killed off, and Kotick knew that where men had come once they would come again.
Seals had come to those islands once upon a time, but men had killed them all off.
The tradition is kept up here that you are the best of skaters," she said, with her little black-gloved hand brushing a grain of hoarfrost off her muff.
Levin rose to his feet, took off his overcoat, and scurrying over the rough ice round the hut, came out on the smooth ice and skated without effort, as it were, by simple exercise of will, increasing and slackening speed and turning his course.
She gave him her hand, and they set off side by side, going faster and faster, and the more rapidly they moved the more tightly she grasped his hand.
Having set some of the "boys" to cut off the best of the giraffe's meat, we went to work to build a "scherm" near one of the pools and about a hundred yards to its right.
Well, there we three sat yarning away in the beautiful moonlight, and watching the Kafirs a few yards off sucking their intoxicating "daccha" from a pipe of which the mouthpiece was made of the horn of an eland, till one by one they rolled themselves up in their blankets and went to sleep by the fire, that is, all except Umbopa, who was a little apart, his chin resting on his hand, and thinking deeply.