恐吓的英文：
threaten
menace
intimidate
cow
frighten

参考例句：

Intimidate a witness
恐吓某证人

To fill with alarm;frighten.
使惊恐使充满惊恐;恐吓

The criminal shot down at the ground to frighten everyone.
罪犯向地面射击以为恐吓。

To intimidate or dominate in a blustering way.
威吓，欺凌以威胁的方式恐吓或威迫

To mistreat or intimidate by bullying.
恐吓，威胁用暴徒的方式欺侮或恫吓

Hollow threats
无用的恐吓

My threat reduced him to silence.
我的恐吓使他静默。

The police could have charged them with threatening behaviour.
警方本可指控他们恐吓。

We will not give in to threats or intimidation.
我们决不屈服于威胁或恐吓。

He flourished the weapon in an attempt at bravado
他挥舞武器意在恐吓。

threaten是什么意思：
v. 威胁，恐吓

A storm was threatening.
一场暴风雨即将来临。

They threatened to revolt.
他们扬言说要起义

A storm was threatening.
一场暴风雨即将来临。

menace是什么意思：
n. 威胁，胁迫
v. 威胁，胁迫

A menacing gang has breached the palace
皇宫已被一群用心险恶的人给包围了

a film that creates an atmosphere of menace
一部营造威吓气氛的影片.

Hurricanes periodically menace the Gulf Coast.
飓风常常威胁着墨西哥湾海岸。

intimidate是什么意思：
v. 恐吓，威胁

That too was intimidating.
那也使人望而生畏。

He will by no means surrender to intimidation.
他绝不会屈服于协迫。

We will not give in to threats or intimidation.
我们决不屈服于威胁或恐吓。