Traitorous is the adjective for behaving like a traitor — not loyal to your country, your friends, or what you claimed to stand for. It describes acts, words, plans, and sometimes people: a traitorous letter, a traitorous plot, traitorous officers.

TraitorousTraitorous is the adjective for behaving like a traitor是「像叛徒一樣行事」的形容詞——not loyal to your country, your friends, or what you claimed to stand for意思是對你的國家、朋友，或自己宣稱的立場不忠。It describes acts, words, plans, and sometimes people它可以形容行為、言論、計畫，有時候也形容人：a traitorous letter, a traitorous plot, traitorous officers像a traitorous letter（叛國的信）、a traitorous plot（叛國的陰謀）、traitorous officers（叛國的軍官）。

It is a formal and old-sounding word, most at home in history books, court language, war stories, and political speeches, and quite rare in ordinary talk. In everyday English people simply say disloyal, or turn the noun into a phrase — "what he did was the act of a traitor".

It is a formal and old-sounding word這是一個正式、聽起來有點古老的字，most at home in history books, court language, war stories, and political speeches最常出現在歷史書、法庭語言、戰爭故事，還有政治演講裡，and quite rare in ordinary talk在日常對話裡很少見。In everyday English people simply say disloyal日常英文裡人們就直接說disloyal（不忠），or turn the noun into a phrase — "what he did was the act of a traitor"或把名詞轉成一句話——"what he did was the act of a traitor"（他做的事就是叛徒的行為）。

Because it sounds so grand, modern speakers often use it half in fun, about very small betrayals: a traitorous thought when you find yourself enjoying the rival team's win.

Because it sounds so grand因為這個字聽起來很誇張，modern speakers often use it half in fun現代人常常半開玩笑地用它，about very small betrayals來講非常小的背叛：a traitorous thought when you find yourself enjoying the rival team's win像是發現自己居然在享受對手球隊獲勝時，那種a traitorous thought（叛徒般的念頭）。

It is worth putting next to treacherous, which looks like a close cousin and shares the same Latin root but has drifted. Treacherous now most often means dangerous and not to be relied on — treacherous roads, treacherous ice — and only sometimes means disloyal. Traitorous never means dangerous; it stays with betrayal.

It is worth putting next to treacherous值得把它拿來跟treacherous放在一起看，which looks like a close cousin and shares the same Latin root but has drifted兩者看起來像近親、字源也一樣是拉丁文，但意思已經走偏了。Treacherous now most often means dangerous and not to be relied onTreacherous現在通常是指危險、靠不住——treacherous roads, treacherous ice像treacherous roads（危險的路）、treacherous ice（危險的冰面）——and only sometimes means disloyal只有時候才指不忠。Traitorous never means dangerousTraitorous從來不表示危險；it stays with betrayal它一直守在「背叛」這個意思上。

The stress falls on the first part, "TRAY-tuh-rus".

The stress falls on the first part重音落在第一個音節，"TRAY-tuh-rus"念作"TRAY-tuh-rus"。