WordNet (r) 3.0 (2006):
wear down v 1: exhaust or get tired through overuse or great strain or stress; "We wore ourselves out on this hike" [syn: tire, wear upon, tire out, wear, weary, jade, wear out, outwear, wear down, fag out, fag, fatigue] [ant: freshen, refresh, refreshen] 2: deteriorate through use or stress; "The constant friction wore out the cloth" [syn: wear, wear off, wear out, wear down, wear thin]