An eye like Mars, to threaten or command. [ William Shakespeare ]

Man is never watchful enough against dangers that threaten him every hour. [ Horace ]

The anger of a woman is the greatest evil with which one can threaten his enemies. [ Chillon ]

The misuse of words in this literature of ungoverned or ungovernable sensibility has become so general as to threaten the validity of all definitions. [ E. P. Whipple ]

Ministers who threaten death and destruction employ weapons of weakness. Argument and kindness are alone effectual, flavored by the principles of Divine love. [ Hosea Ballou ]

Some eyes threaten like a loaded and levelled pistol, and others are as insulting as hissing or kicking; some have no more expression than blueberries, while others are as deep as a well which you can fall into. [ Emerson ]

Other parts of the body assist the speaker, but these speak themselves. By them we ask, we promise, we invoke, we dismiss, we threaten, we entreat, we deprecate; we express fear, joy, grief, our doubts, our assent, our penitence; we show moderation, profusion; we mark number and time. [ Quintilian ]