A person who opposes or acts against something; one who starts or begins something again.
From agin (against) or again, plus the agent suffix -er (one who). The word appears in dialectal and historical texts, though it's now quite rare.
In historical labor texts and agrarian writings, you'll find 'aginners' used to describe tenant farmers or workers who resisted landlord authority—it's a fascinating window into class resistance and how language encoded social opposition.
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