ROGET THESAURUS
take heed
Caution
VB
be cautious, take care,
take heed, take good care, have a care mind, what one is about, be on one's guard, make assurance doubly sure, bespeak, think twice, look before one leaps, count the cost, look to the main chance, cut one's coat according to one's cloth, feel one's ground, feel one's way, see how the land lies, wait to see how the cat jumps, bridle one's tongue, reculer pour mieux sauter, let well alone, let well enough alone, let sleeping dogs lie, ne pas reveiller le chat qui dort, don't wake a sleeping cat, keep out of harm's way, keep out of troubled waters, keep at a respectful distance, stand aloof, keep on the safe side, be on the safe side, husband one's resources, caution.
Hearing
VB
hear, overhear, hark, harken, list, listen, pay attention,
take heed, give an ear, lend an ear, bend an ear, catch, catch a sound, prick up one's ears, give ear, give a hearing, give audience to, hang upon the lips of, be all ears, listen with both ears, become audible, meet the ear, fall upon the ear, catch the ear, reach the ear, be heard, ring in the ear.