British spelling: to convert to or support abolition; to make something abolitionist in character.
From abolition plus the verb-forming suffix -ise (British spelling of -ize), from Latin -izare, meaning to make or cause to become something.
The British spelling 'abolitionise' is increasingly rare because American English spelling norms have become dominant globally through publishing and digital media, making this a living example of how language standardization happens.
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