Antonyms of adj undignified

1 sense of undignified

Sense 1
undignified (vs. dignified) -- (lacking dignity)

dignified (vs. undignified) -- (having or expressing dignity; especially formality or stateliness in bearing or appearance; "her dignified demeanor"; "the director of the school was a dignified white-haired gentleman")
        => courtly, formal, stately -- (refined or imposing in manner or appearance; befitting a royal court; "a courtly gentleman")
        => distinguished, grand, imposing, magisterial -- (used of a person's appearance or behavior; befitting an eminent person; "his distinguished bearing"; "the monarch's imposing presence"; "she reigned in magisterial beauty")

Similarity of adj undignified

1 sense of undignified

Sense 1
undignified (vs. dignified) -- (lacking dignity)
       => demeaning, humbling, humiliating, mortifying -- (causing awareness of your shortcomings; "golf is a humbling game")
       => infra dig (predicate) -- (beneath your dignity; "considered helping with the dishes to be infra dig")
       => pathetic, ridiculous, silly -- (inspiring scornful pity; "how silly an ardent and unsuccessful wooer can be especially if he is getting on in years"- Dashiell Hammett)
          Also See-> discomposed#1; inelegant#1