1) Accidentally 2) Badly 3) By mistake 4) Defectively 5) Erroneously 6) Fallaciously 7) Falsely 8) Faultily 9) Imperfectly 10) Improperly 11) In an inaccurate manner 12) In an incorrect manner 13) Inaccurately 14) Misguidedly 15) Mistakenly 16) Poorly 17) Speciously 18) Untruly 19) Wrongly 1) Amiss 2) Falsely 3) Imperfectly 4) Improperly 5) Inappropriately 6) Poorly 7) Unjustly 8) Unsuitably 9) Wrongly 
• (adv.) Not correctly; inaccurately; not exactly; as, a writing incorrectly copied; testimony incorrectly stated.
In`cor·rect'ly adverb Not correctly; inaccurately; not exactly; as, a writing incorrectly copied; testimony incorrectly stated. 
[adv] - in an incorrect manner
wrong adverb in an incorrect manner; `she guessed wrong`