Antonyms of adv justifiably

1 sense of justifiably

Sense 1
justifiably -- (with good reason; "he is justifiably bitter")
       Antonym of unjustifiably (Sense 1)
      => unjustifiably, inexcusably -- (without any excuse; "he is unjustifiably harsh on her")

Synonyms of adv justifiably

1 sense of justifiably

Sense 1
justifiably -- (with good reason; "he is justifiably bitter")