We don't have any synonyms for wrong-headedly yet.
Think wrong-headedly belongs in the thesaurus? Recommend it and we'll take a look.
Definition of wrong-headedly:
(adj) :
Incorrect or untrue.
(adj) :
Immoral, not good, bad.
(adj) :
Not working; out of order.
(adj) :
Asserting something incorrect or untrue.
(adv) :
(informal) In a way that isn't right; incorrectly, wrongly.
(n) :
Something that is immoral or not good.