late 14c., disavauntage, "loss, injury, prejudice to interest," from Old French desavantage (13c.), from des- "not, opposite of" (see dis-) + avantage "advantage, profit, superiority" (see advantage). Meaning "that which prevents success or renders it difficult" is from 1520s.
disadvantage (v.)
"hinder, do something disadvantageous to," 1530s, from disadvantage (n.). Related: Disadvantaged; disadvantaging.
This rule clearly disadvantages me
disabled
disabuse
disaccord
disaccordance
disaccustom
disadvantage
disadvantaged
disadvantageous
disaffect
disaffected
disaffection