n.

1. （宗教或道德上的）罪，罪孽，罪恶[C][U]
   It's a sin to waste food.

   浪费食物是一种罪孽。

2. （违反礼节，习俗的）过错，过失[C][（+against）]
   It's a sin to stay indoors on such a fine day.

   这样的好天气留在屋里实在不该。

3. 【口】荒唐的事，无聊的事，蠢事[C]

vi.

1. 违反教规；违命；犯罪[（+against）]
   Alice is accused of sinning against this unwritten law.

   艾丽丝被指责违反这条不成文法。

2. 犯过失[（+against）]

vt.

1. 犯（罪）
2. 过罪恶生活而糟蹋掉（健康等）[（+away）]

n.

1. an immoral act considered to be a transgression against divine law.
2. an act regarded as a serious offence.

v.

abbrev.