to use rude or offensive language, usually because you are angry。She fell over and swore loudly.她摔倒了，大罵了一聲。從這個例句我們可以看出swear的含義，用作動詞發誓;咒罵;詛咒;說臟話;鄭重承諾;表示決心要;賭咒發誓地說;肯定地說;(尤指在法庭上)發誓，鄭重承諾;使起誓(保密)和名詞發誓;誓言;咒罵;罵人話。

柯林斯詞典

1

VERB 咒罵;詛咒;說臟話

If someone swears , they use language that is considered to be rude or offensive, usually because they are angry.

It's wrong to swear and shout...

破口大罵是不對的。

2

VERB 發誓要;鄭重承諾

If you swear to do something, you promise in a serious way that you will do it.

Alan swore that he would do everything in his power to help us...

艾倫許諾要盡其所能幫助我們。

3

VERB 發誓，鄭重聲明，增加(所說屬實)

If you say that you swear that something is true or that you can to it, you are saying very firmly that it is true.

I swear I've told you all I know...

我發誓我已經把我所知道的全都告訴你了。

4

VERB 使發誓，使承諾(保守秘密)

If someone is sworn to secrecy or silence, they promise another person that they will not reveal a secret.

She was bursting to announce the news but was sworn to secrecy.

她急不可待想宣布這個消息，但卻發過誓要守口如瓶。

5

See also: sworn