A slip-up is a careless mistake — usually small, and usually because you were not paying attention, not because you cannot do the job. You sent the mail to the wrong person; you wrote the wrong date; you said the wrong name.

A slip-up is是 a careless mistake一個不小心的錯——usually small通常很小，and usually because而且通常是因為 you你 were not paying attention沒在注意，not because不是因為 you cannot do the job你做不來這件事。 You你 sent the mail to the wrong person把信寄錯了人；you你 wrote the wrong date寫錯了日期；you你 said the wrong name說錯了名字。

It feels milder than a serious error or a crime: people use it to keep the blame light. “Sorry, that was a slip-up.” You will also hear the verb slip up (“I slipped up”). The noun is just that phrasal verb turned into a thing.

It它 than a serious error or a crime比起嚴重的錯誤或罪行 feels milder感覺輕得多：people人們 use it用它 to keep the blame light把責備放輕。 “Sorry, that was a slip-up.”「抱歉，那是個小失手。」 You你 will also hear也會聽到 the verb slip up動詞 slip up（“I slipped up”我失手了）。 The noun這個名詞 is just就是 that phrasal verb那個片語動詞 turned into a thing變成的一個東西。

Informal to neutral; fine at work in speech, a bit casual for a very formal report, where people may prefer mistake or error. Though actually some speakers write slipup as one word; the hyphen slip-up is the usual dictionary shape.

Informal to neutral語氣從不正式到中性；in speech口頭上 at work在公司 fine沒問題，for a very formal report對很正式的報告來說 a bit casual就有點隨便——where那種場合 people人們 may prefer可能寧願用 mistake or error。 Though actually不過其實，some speakers有些人 write slipup as one word把它連成 slipup 一個字寫；the hyphen slip-up帶連字號的 slip-up is the usual dictionary shape才是字典裡常見的樣子。