vt.

1. 原谅[（+for）]
   Please excuse the offence this time: I will not do it again.

   请原谅这次冒犯：我以后再也不会了。

   Please excuse me if I have left any of your questions unanswered.

   如果我还有什么问题没有回答你的话，请原谅。

2. 辩解；成为……的理由；试图开脱[+v-ing]
   She excused her absence by saying that she was ill.

   她为她的缺席申辩，说是病了。

3. 免除[（+from）][O1]
   I'd rather be excused from the meeting.

   我希望能不参加那个会议。

4. 准许……离去；让……走开[O2]
   Please excuse me for a while.

   请允许我离开一会儿。

n.

1. 辩解[C][U]
2. 理由；借口[C][U]
   There is no excuse for this chaotic state of affairs.

   事情弄得如此之乱，已经没有什么理由可说了。

3. 原谅，饶恕[C]
4. 请假条[C]
   I wrote an excuse for my absence from school.

   我写了一张请假条，说明缺课的原因。

5. 歉意，道歉[P]

v.

1. try or serve to justify (a fault or offence); mitigate.
   ▸forgive (a fault or offence, or a person committing one).
2. release from a duty or requirement.
   ▸(used in polite formulas) allow to leave a room or gathering.
   ▸ (excuse oneself) say politely that one is leaving.

n.

1. a defence or justification of a fault or offence.
2. something said to conceal the real reason for an action.
3. (an excuse for) informal a poor or inadequate example of.