A traitor is someone who betrays a trust — who turns against their own country, their friends, or the things they said they believed in. The core case is political: a soldier who passes secrets to the enemy, a general who joins the other side. That is where the word is heaviest, and in many countries it is a legal charge that can end in prison or death.

A traitortraitor is是 someone who betrays a trust背叛信任的人——who turns against背叛 their own country, their friends, or the things they said they believed in自己國家、朋友，或自己說過相信的事情。The core case最核心的情況 is political是政治上的：a soldier who passes secrets to the enemy把秘密洩露給敵人的士兵、a general who joins the other side投靠對方陣營的將軍。That is where the word is heaviest這是這個字最沉重的地方，and而且 in many countries在很多國家，it is是 a legal charge一項正式罪名 that can end in prison or death可能導致坐牢或死刑。

But the word is used far more widely than that. Someone who leaves a group and helps its rivals, who reports a friend's secret to the boss, who abandons a cause they once led — all get called traitors. The essential shape is always the same: you were on the inside, you were trusted, and you used that position against the people who trusted you.

But但 the word is used far more widely than that這個字的用法比這廣得多。Someone who leaves a group and helps its rivals離開一個團體去幫對手的人、who reports a friend's secret to the boss把朋友的秘密告訴老闆的人、who abandons a cause they once led拋棄自己曾經領導的理念的人——all get called traitors都會被叫做traitor。The essential shape is always the same本質上的樣子都一樣：you were on the inside你曾經是自己人，you were trusted你曾經被信任，and而 you used that position against the people who trusted you你利用那個位置去對付信任你的人。

That inside part is what makes traitor so much stronger than enemy. An enemy was never yours; a traitor was. So the word carries a heat that few English words match, and calling a real person a traitor is a serious accusation, common in political argument precisely because it wounds.

That inside part就是「曾經在裡面」這一點 is what makes traitor so much stronger than enemy讓traitor這個字比enemy強烈得多。An enemyenemy was never yours從來不屬於你這邊；a traitor was但traitor曾經是。So所以 the word carries a heat這個字帶著一種火氣 that few English words match很少英文字比得上的，and而且 calling a real person a traitor說一個真實的人是traitor is a serious accusation是很嚴重的指控，common in political argument在政治爭論裡很常見，precisely because it wounds正是因為它很傷人。

The everyday use is much lighter and usually joking — "you support the other team now? traitor!" — where the tone of voice makes it plain that nobody means it. A related word is betray, the action; treason, the crime; treachery, the quality.

The everyday use日常的用法 is much lighter and usually joking輕鬆很多，通常是開玩笑——'you support the other team now? traitor!'「你現在支持另一隊了？叛徒！」——where the tone of voice makes it plain語氣就已經表明 that nobody means it沒有人是認真的。A related word相關的字 is betray有betray（動詞，背叛的動作）, the action；treason（叛國罪，這項罪行）, the crime；treachery（背叛的性質、奸詐）, the quality。