A zealot or a bigot. Type of person who is unwilling or unable to change their values when confronted with alternatives. Is most used to reflect generational clash of values. Can be used as an adjective or noun.
Adjective: 'My Dad is quite habotnic, he won't change his views.'

Noun: 'A habotnic Dad like you would not allow me to enjoy the trendy things in life.'
by Virgil the Wordsmith December 20, 2018
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