Definition of "underdressed" []

• Insufficiently dressed, as for cold weather. (adjective)
• Insufficiently well-dressed, as for a formal event. (adjective)
• Simple past tense and past participle of underdress. (verb)

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• "For some of their fresh-faced interns, however, skimpy tank tops, jeans, short skirts and flip-flops are the "underdressed" norm."
• "And the announcement was out that Robert Heinlein wanted SFWA members to really dress for the awards, I saw people in tuxes, and I knew for one event I must surely be underdressed."
• "Or maybe those women were riduculously underdressed?"