Unchristian
Part of speech: adjective
Definition: Not of the Christian faith Not in accord with Christian teachings; heretical heathen, pagan uncivilized
Unchristianly
Part of speech: adverb
Definition: In an unchristian way.
Unchristian as an adjective is not of the christian faith while Unchristianly as an adverb is in an unchristian way.
Part of speech: adjective
Definition: Not of the Christian faith Not in accord with Christian teachings; heretical heathen, pagan uncivilized
Part of speech: adverb
Definition: In an unchristian way.
We hope you now know whether to use Unchristian or Unchristianly in your sentence.