Antonyms of verb advantage

1 sense of advantage

Sense 1
advantage -- (give an advantage to; "This system advantages the rich")
       Antonym of disadvantage (Sense 1)
      => disadvantage, disfavor, disfavour -- (put at a disadvantage; hinder, harm; "This rule clearly disadvantages me")

Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb advantage

1 sense of advantage

Sense 1
advantage -- (give an advantage to; "This system advantages the rich")
       => prefer, favor, favour -- (promote over another; "he favors his second daughter")