Verb
To be on one's guard; to be cautious; to take care; -- commonly followed by of or lest before the thing that is to be avoided.
To have a special regard; to heed.
To avoid; to take care of; to have a care for.
Source: Webster's dictionaryBeware of the fury of the patient man. John Dryden
Beware lest you lose the substance by grasping at the shadow. Aesop
Beware of false knowledge; it is more dangerous than ignorance. George Bernard Shaw
Beware of the anger of a patient man. Irish Proverb
Beware of Greeks bearing gifts. English Proverb
Beware of the man to whom you have done a good turn. Lebanese Proverb