Antonyms of noun undergarment

1 sense of undergarment

Sense 1
undergarment, unmentionable -- (a garment worn under other garments)
       Antonym of overgarment (Sense 1)
      => overgarment, outer garment -- (a garment worn over other garments)

Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun undergarment

1 sense of undergarment

Sense 1
undergarment, unmentionable -- (a garment worn under other garments)
       => garment -- (an article of clothing; "garments of the finest silk")