You searched for: “warn
warn, worn
warn (WORN) (verb)
To tell someone to do or not to do something in order to avoid danger or trouble: "Parents warn their children to be careful when crossing streets."
worn (WORN) (verb)
Having been affected by wear or use: "Miltilda has worn the same shoes for five years!"

Paula tried to warn Bill that his shoes have holes in the soles. Actually, it looks as if he has worn them out.

(Latin: monere, to warn; to remind, to advise, to instruct)