worn-down

(verb) exhaust or get tired through overuse or great strain or stress. Synonyms: tire, wear upon, tire out, wear, weary, jade, wear out, outwear, wear down, fag out, fag, fatigue. Example: "We wore ourselves out on this hike."

(verb) deteriorate through use or stress. Synonyms: wear, wear off, wear out, wear down, wear thin. Example: "The constant friction wore out the cloth."