1
Stage 1 of 3
durus
Latin · ancient
"hard"
hard, giving rise to durare (to harden)
2
Stage 2 of 3
obdurare
Latin · ancient
"to harden thoroughly, to persist stubbornly"
to harden thoroughly, to persist stubbornly, from ob- and durare
3
Stage 3 of 3
obdurate
English · 1400s
"stubbornly refusing to change one's mind or opinion"
settled as the English word for someone stubbornly refusing to change their mind
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