off
gb/ˈɔf/ us/ˈɔf/
A1
英語
~ 500
語義
0件の語義
adverb
A1
state
1
Not working or operating
Not working because it is not turned on.
用法パターン：
[device] is off
よくある間違い：
Learners sometimes confuse 'off' with 'out' when talking about lights or devices, but 'off' refers to the power state.
類義語
inactive (More formal and general; can apply to people, systems, or devices.)
対義語
on (Indicates that a device or system is operating or active.)
コロケーション
turned off
|switch off
|completely off
|power off
テーマ
daily life
|technology
|daily_life
例文
- The lights are off because no one is home.
- Please make sure your phone is off during the movie.
- The computer was off all night to save energy.
学習者向け例文
- The TV is off.
- My phone is off.
- The light is off.
preposition
A1
relation
2
Away from a surface or object
Used to show that something moves away from a surface or object.
用法パターン：
[someone/something] get off [surface/object]
よくある間違い：
Learners sometimes confuse 'off' with 'of' in writing; 'off' is about separation or movement away.
類義語
down from (Specifies downward movement from an elevated position.)
対義語
onto (Indicates movement toward and onto a surface.)
コロケーション
fall off
|jump off
|take off
|get off
テーマ
daily life
|movement
|space
|core_vocabulary
例文
- She fell off her bike.
- Please take your feet off the table.
- He jumped off the wall into the pool.
学習者向け例文
- I fell off my chair.
- Take the book off the desk.
- Get off the bus here.
adjective
informal
A2
state
3
Cancelled or not happening
Used when something planned will not happen.
よくある間違い：
Learners may confuse 'off' meaning cancelled with 'off' meaning turned off; context makes the difference.
類義語
cancelled (Neutral and formal; commonly used in official communication.)
対義語
on (Indicates that an event will proceed as planned.)
コロケーション
meeting is off
|game is off
|plans are off
テーマ
daily life
|daily_life
|time
例文
- The wedding is off due to family disagreements.
- Our meeting is off because the manager is sick.
- The trip is off until further notice.
学習者向け例文
- The party is off.
- The game is off today.
- Our lunch is off.
adverb
informal
B1
property
4
Incorrect or inaccurate
Wrong or not exact.
類義語
wrong (More direct and general; 'off' is often softer or casual.)
対義語
accurate (Correct and precise in detail.)
コロケーション
way off
|a bit off
|miles off
テーマ
communication
|core_vocabulary
例文
- Your guess was way off.
- That measurement seems a bit off.
- You're slightly off in your calculations.
学習者向け例文
- My guess was off.
- That answer is off.
- Your number is off.
adjective
informal
A2
property
5
Spoiled or bad (food)
Not good to eat because it is old or bad.
類義語
spoiled (Neutral term for food that has gone bad.)
対義語
fresh (Recently made or picked; still good to eat.)
コロケーション
milk is off
|smells off
|gone off
テーマ
food
|food_drink
|health
例文
- The milk smells off; don't drink it.
- This meat tastes a bit off.
- The fish has gone off in the heat.
学習者向け例文
- The milk is off.
- The meat is off.
- This food is off.
文法
表現
day off
1/dˈeɪ ˈɔf/
fixed phrase
Day without work/study duties
A day when you do not go to work or school.
例文
- I'm taking a day off tomorrow to rest.
- She has Fridays off this month.
go off
1/ɡˈoʊ ˈɔf/
phrasal verb
Make noise/explode suddenly
To make a loud noise suddenly, like an alarm, gun, or bomb.
例文
- The alarm went off at 6 a.m.
- The bomb went off in the distance.
put off
1/pˈʊt ˈɔf/
phrasal verb
Delay doing something
To do something at a later time instead of now.
例文
- We had to put off the meeting until next week.
- Don't put off your homework until the last minute.
- Don't put it off any longer; do it now.
take off
4/tˈeɪk ˈɔf/
phrasal verb
Begin flight / become successful quickly
For planes: to start flying. For people/things: to become popular or successful very fast.
例文
- The plane will take off in ten minutes.
- Her career really took off after that movie.
- We watched the helicopter take off from the field.
turn off
1/tˈɚn ˈɔf/
phrasal verb
Switch off a device or system
To stop a machine, light, or device from working.
例文
- Please turn off the lights when you leave.
- Turn off the oven before leaving.
- He turned off the engine before getting out.
- She turned off her phone during the meeting.