A rendition of Gilbert and Sullivan from a more carefree and innocent time. Why is that? Because if you're under 35 it was before you were born. Haha, you got screwed!
For the record, according to Merriam-Webster's Collegiate Dictionary:
\ˈäb-də-rət, -dyə-; äb-ˈdu̇r-ət, əb-, -ˈdyu̇r-\
Middle English, from Latin obduratus, past participle of obdurare to harden, from ob- against + durus hard — more at during
1 a: stubbornly persistent in wrongdoing b: hardened in feelings
2: resistant to persuasion or softening influences
synonyms see inflexible