Tra từ off - Từ điển Oxford Advanced Learner 8th

off adverb, preposition, adjective, noun, verb BrE [ɒf] NAmE [ɔːf] NAmE [ɑːf]
adverb For the special uses of off in phrasal verbs, look at the entries for the verbs. For example come off is in the phrasal verb section at come.
1. away from a place; at a distance in space or time
• I called him but he ran off.
• Sarah's off in India somewhere.
•I must be off soon (= leave).
•Off you go!
•Summer's not far off now.
•A solution is still some way off.
2. used to say that sth has been removed
• He's had his beard shaved off.
• Take your coat off.
•Don't leave the toothpaste with the top off.
3. starting a race
•They're off (= the race has begun).
4. no longer going to happen; cancelled
• The wedding is off.
5. not connected or functioning
• The water is off.
• Make sure the TV is off.
6. (especially BrE) (of an item on a menu)no longer available or being served
•Sorry, the duck is off.
7. away from work or duty
• She's off today.
• I've got three days off next week.
•How many days did you take off?
•I need some time off.
8. taken from the price
•shoes with $20 off
•All shirts have/are 10% off.
9. behind or at the sides of the stage in a theatre
Syn: ↑offstage

Word Origin:
Old English, originally a variant of ↑of (which combined the senses of ‘of’ and ‘off’).
Idioms: ↑off and on and off ▪ ↑off for something ▪ ↑well off ▪ ↑worse off

preposition For the special uses of off in phrasal verbs, look at the entries for the verbs. For example take sth off sth is in the phrasal verb section at take.
1. down or away from a place or at a distance in space or time
• I fell off the ladder.
• Keep off the grass!
•an island off the coast of Spain
•They were still 100 metres off the summit.
•Scientists are still a long way off finding a cure.
•We're getting right off the subject.
2. leading away from sth, for example a road or room
• We live off Main Street.
• There's a bathroom off the main bedroom.
3. used to say that sth has been removed
• You need to take the top off the bottle first!
• I want about an inch off the back of my hair.
4. away from work or duty
• He's had ten days off school.
5. away from a price
• They knocked £500 off the car.
6. off of (non-standard or NAmE, informal)off; from
• I got it off of my brother.
7. not wanting or liking sth that you usually eat or use
•I'm off (= not drinking) alcohol for a week.
•He's finally off drugs (= he no longer takes them).

Word Origin:
Old English, originally a variant of ↑of (which combined the senses of ‘of’ and ‘off’).

adjective not before noun
1. (of food)no longer fresh enough to eat or drink
•This fish has gone off.
•The milk smells off.
•It's off.
2. ~ (with sb) (informal, especially BrE)not polite or friendly
•He was a bit off with me this morning.
3. (informal, especially BrE)not acceptable
•It's a bit off expecting us to work on Sunday.

Word Origin:
Old English, originally a variant of ↑of (which combined the senses of ‘of’ and ‘off’).

Example Bank:
•I think this milk is slightly off.
•The fish had gone off.

noun singular the off
the start of a race
• They're ready for the off.

Word Origin:
Old English, originally a variant of ↑of (which combined the senses of ‘of’ and ‘off’).

verb ~ sb (informal, especially NAmE)
to kill sb
Verb forms:

Word Origin:
[off] Old English, originally a variant of ↑of (which combined the senses of ‘of’ and ‘off’).