WordWeb Online

1. Censure severely or angrily
   "The customer dressed down the waiter for bringing cold soup"
   - call on the carpet [US], take to task, rebuke, rag, trounce, reproof, lecture, reprimand, jaw, call down, scold, chide, berate, bawl out, remonstrate, chew out [N. Amer], chew up [N. Amer], have words, lambaste, lambast, ream [N. Amer]
    
2. Dress informally and casually
   "On Fridays, employees can dress down"
   - underdress

Derived forms: dressed down, dressing down, dresses down

Type of: criticise [Brit], criticize, damn, dress, get dressed, knock, pick apart

Antonym: dress up

Encyclopedia: Dress down