'dress down' definitions:

Definition of 'dress down'

(from WordNet)
verb
Censure severely or angrily; "The mother scolded the child for entering a stranger's car"; "The deputy ragged the Prime Minister"; "The customer dressed down the waiter for bringing cold soup" [syn: call on the carpet, take to task, rebuke, rag, trounce, reproof, lecture, reprimand, jaw, dress down, call down, scold, chide, berate, bawl out, remonstrate, chew out, chew up, have words, lambaste, lambast]
verb
Dress informally and casually; "On Fridays, employees can underdress" [syn: dress down, underdress] [ant: attire, deck out, deck up, dress up, fancy up, fig out, fig up, get up, gussy up, overdress, prink, rig out, tog out, tog up, trick out, trick up]

Synonyms of 'dress down'

From: Moby Thesaurus

Words containing 'dress down'