Fanatical.
But Faith, fanatic Faith, once wedded fast / To some dear falsehood, hugs it to the last.
Showing evidence of possession by a god or demon; frenzied, overzealous.
A person who is zealously enthusiastic for some cause.
The reclusive tycoon calling himself the Illusive Man is a human nationalist focused on advancing human interests, whatever the cost to non-humans. The Citadel Council regards him as a fanatic posing a serious threat to galactic security.
First attested in 1525. Learned borrowing from Latin fānāticus (“of a temple, divinely inspired, frenzied”), from fānum (“temple”). Influenced by French fanatique.
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