ad.

1. （离）开，（走）开，（隔）开
   They went off together and left me sitting there.

   他们一同离开了，留下我独自坐在那里。

2. （时间、空间上）离，距
   The town is five miles off.

   小城离这儿五英里远。

3. 切断，关掉，停止；取消；不在工作，休息
   He turned off the light before going out.

   他出门前把灯关掉了。

4. 完，光，直到最后
   I've paid off my debts.

   我已把债款还清了。

5. （食品）变坏，变质；不再供应
   The milk has gone off.

   这牛奶已变质。

6. 不如通常水平
7. （消）除，（去）除

prep.

1. 离开……，隔着……；在（离岸边不远的）海面
   He lifted a cup off the table.

   他从桌上拿起一只杯子。

2. 从……脱落，从……掉下
3. 偏离……；失去……
   You're going off the subject.

   你们离题了。

4. 通向……；从……分岔
   The dining room is off the living room.

   餐室通向起居室。

5. 戒掉……；停服……
   He is off smoking.

   他戒烟了。

6. 以……为依靠，以……为食
7. 低于……；折价
   He offered to take 10% off the price.

   他表示愿意按原价减去百分之十。

a.[Z]

1. 离去的；偏离的
   I must be off now.

   我这就得走了。

2. 休假的，不上班的
   Tomorrow will be my day off.

   明天我休息（不上班）。

3. 不合时令的[B]
4. 情况不好的；（食物）腐败的
   This cheese is off.

   这乳酪已变质。

5. （电器等）关着的；（电流等）切断的[F]
   The electricity is off.

   电流切断了。

6. 较远的，另一侧的

vt.

1. 宰了

adv.

1. away from the place in question.
2. so as to be removed or separated.
3. starting a journey or race.
4. so as to bring to an end or be discontinued.
5. (of an electrical appliance or power supply) not functioning or so as to cease to function.
6. having specified material goods or wealth:
   how are you off for money?

prep.

1. moving away and often down from.
2. situated or leading in a direction away from.
3. so as to be removed or separated from.
4. having a temporary dislike of.

adj.

1. unsatisfactory or inadequate.
2. (of food) no longer fresh.
3. located on the side of a vehicle that is normally furthest from the kerb. Compare with near (in sense ⁴).
4. Brit. informal annoying or unfair.
5. Brit. informal unwell.

n.

1. (also off side) Cricket  the half of the field towards which the batsman's feet are pointed when standing to receive the ball. The opposite of leg.
2. Brit. informal the start of a race or journey.

v.

1. leave.
2. N. Amer. kill.