Antonyms of adj well-dressed

1 sense of well-dressed

Sense 1
well-groomed, well-dressed -- (having tasteful clothing and being scrupulously neat)

INDIRECT (VIA groomed) -> ungroomed -- (not neat and smart in appearance; "he was wrinkled and ungroomed, with a two-day beard"; "ungroomed hair")

Similarity of adj well-dressed

1 sense of well-dressed

Sense 1
well-groomed, well-dressed -- (having tasteful clothing and being scrupulously neat)
       => groomed (vs. ungroomed) -- (neat and smart in appearance; well cared for; "the manager was a beautifully groomed young man"; "his horse was always groomed")