To unsubscribe is to ask to be taken off a list you were on, so the messages stop coming. These days it almost always means email: you click the tiny word 'Unsubscribe' at the bottom of an advertisement, and that company should stop sending you things.

To unsubscribe取消訂閱 is to ask to be taken off a list you were on就是要求把自己從一個名單上移除，so the messages stop coming讓訊息不再寄來。These days現在 it almost always means email幾乎都是指信箱：you click the tiny word 'Unsubscribe' at the bottom of an advertisement你點廣告最下面那個小小的「Unsubscribe」，and that company should stop sending you things那家公司就該停止寄東西給你。

It has spread beyond email too — you unsubscribe from a YouTube channel, from a podcast, from a paid app or streaming service. It is an everyday word, informal and completely normal in speech.

It has spread beyond email too這個字也不只用在信箱了——you unsubscribe from a YouTube channel你可以退訂YouTube頻道，from a podcast退訂podcast，from a paid app or streaming service退訂付費app或串流服務。It is an everyday word這是日常用字，informal and completely normal in speech口語、完全普通。

Grammar worth memorising: you unsubscribe FROM something, never 'unsubscribe something'. And it is usually used alone, with no object at all — 'I unsubscribed.' The word also has a small joking life online: people say 'unsubscribe' as a way of saying 'I don't want to hear any more of this', the way an older joke was 'no thanks, take me off your mailing list'.

Grammar worth memorising值得記住的文法：you unsubscribe FROM something要說unsubscribe FROM something，never 'unsubscribe something'絕不能說unsubscribe something。And it is usually used alone, with no object at all而且通常單獨用，不接受詞——'I unsubscribed我取消訂閱了。'The word also has a small joking life online這個字在網路上也有個小小的玩笑用法：people say 'unsubscribe' as a way of saying 'I don't want to hear any more of this'有人會說「unsubscribe」來表示「我不想再聽這個了」，the way an older joke was 'no thanks, take me off your mailing list'就像以前有人會說「不用了，把我從你的郵寄名單上刪掉」那種老笑話。

Note that unsubscribing from a company's mail is not the same as deleting your account — the account usually stays, the emails just stop. Some dictionaries also list a noun 'unsubscribe' for the link itself ('click the unsubscribe at the bottom'), which you will see written but rarely hear.

Note注意 that unsubscribing from a company's mail is not the same as deleting your account取消訂閱一家公司的信跟刪除帳號不一樣——the account usually stays帳號通常還在，the emails just stop只是信不再寄來。Some dictionaries also list a noun 'unsubscribe' for the link itself有些字典也把「unsubscribe」列成名詞，指那個連結本身，'click the unsubscribe at the bottom'像「click the unsubscribe at the bottom」這樣講，which you will see written but rarely hear這種用法你會看到但很少聽到。