I. -rə̇t, usu -ə̇d.+V adjective
Etymology: Middle English obdurat, from Latin obduratus, past participle of obdurare to harden, from ob- toward, over + durare to harden — more at ob- , dure
1.
a. : hardened in feelings especially against moral or mollifying influences : stubbornly persistent in wrongdoing
that obdurate old sinner
b. : resistant to persuasion or softening influences : inflexible , unyielding
obdurate in his determination
remaining obdurate to her husband's advances — Edith Wharton
2. : hard and resistant : harsh , rugged , rough
wringing a livelihood from that obdurate soil
• ob·du·rate·ly adverb
• ob·du·rate·ness noun -es
II. -ˌrāt, usu -ād.+V transitive verb
( -ed/-ing/-s )
Etymology: Latin obduratus, past participle of obdurare to harden
: to make obdurate ; especially : to make stubbornly persistent in ill-doing
• ob·du·ra·tion ˌäbd(y)əˈrāshən noun -s