RichThesaurus
unjustifiably
vs
unjustifiedly
unjustifiably
adv
In an unjustifiable manner.
unjustifiedly
adv
Without justification; in an unjustified manner.
How often have the words
unjustifiably
and
unjustifiedly
occurred in a corpus of books?
(source:
Google Ngram Viewer
)