obdurate
Cross references: 1. inflexible ob.du.rate \'a:b-d(y)*-r*t; a:b-'d(y)u.r-*t, *b-, 'a:b-.\ aj [ME, fr. L obduratus, pp. of obdurare to harden, fr. ob- agai]nst + durus hard - more at DURING 1a: hardened in feelings 1b: stubbornly persistent in wrongdoing 2: resistant to persuasion or softening influences : UNYIELDING - ob.du.rate.ly av