"opposed to abortion," first attested 1976, from pro- + life. Hostile alternative anti-choice attested 1978 in Ms. magazine (see pro-choice).
What hypocrisy to call such anti-humanitarian people 'pro-life.' Call them what they are — antichoice. [Ms. magazine, Oct. 8, 1978]
proles
proletarian
proletarianism
proletariat
prolicide
pro-life
proliferate
proliferation
proliferative
prolific
prolix