Antonyms of adj ill-gotten

1 sense of ill-gotten

Sense 1
dirty, ill-gotten -- (obtained illegally or by improper means; "dirty money"; "ill-gotten gains")

INDIRECT (VIA illegal) -> legal -- (established by or founded upon law or official or accepted rules)

Similarity of adj ill-gotten

1 sense of ill-gotten

Sense 1
dirty, ill-gotten -- (obtained illegally or by improper means; "dirty money"; "ill-gotten gains")
       => illegal (vs. legal) -- (prohibited by law or by official or accepted rules; "an illegal chess move")