RichThesaurus
insistently
vs
obdurately
insistently
adv
In an insistent manner; pressingly.
obdurately
adv
In an obdurate manner; stubbornly, intractably or inflexibly.
How often have the words
insistently
and
obdurately
occurred in a corpus of books?
(source:
Google Ngram Viewer
)