underdress

verbs

dress without sufficient warmth
"She was underdressed for the hiking trip and suffered hypothermia"
underdress
antonym
overdress
is a type of (narrower)
provide with clothes or put clothes on
"Parents must feed and dress their child"
apparel, clothe, dress, enclothe, fit out, garb, garment, habilitate, raiment, tog
dress informally and casually
"On Fridays, employees can underdress"
dress down, underdress
antonym
overdress