Antonyms of adv perfectly

1 of 2 senses of perfectly

Sense 2
perfectly -- (in a perfect or faultless way; "She performed perfectly on the balance beam"; "spoke English perfectly"; "solved the problem perfectly")
       Antonym of imperfectly (Sense 1)
      => imperfectly, amiss -- (in an imperfect or faulty way; "The lobe was imperfectly developed"; "Miss Bennet would not play at all amiss if she practiced more"- Jane Austen)

Synonyms of adv perfectly

2 senses of perfectly

Sense 1
absolutely, perfectly, utterly, dead -- (completely and without qualification; used informally as intensifiers; "an absolutely magnificent painting"; "a perfectly idiotic idea"; "you're perfectly right"; "utterly miserable"; "you can be dead sure of my innocence"; "was dead tired"; "dead right")

Sense 2
perfectly -- (in a perfect or faultless way; "She performed perfectly on the balance beam"; "spoke English perfectly"; "solved the problem perfectly")