Alimony

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early 17th century (in the sense ‘nourishment, means of subsistence’): from Latin alimonia ‘nutriment’, from alere ‘nourish’.

wiktionary

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Known since 1655, from Latin alimōnia(“food, support, nourishment, sustenance”) (English aliment, as in alimentary), itself from alere(“to nourish”) + -mōnia(“action, state, condition”).

etymonline

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alimony (n.)

1650s, "nourishment," also "allowance to a wife from a husband's estate, or in certain cases of separation," from Latin alimonia "food, support, nourishment, sustenance," from alere "to nourish, rear, support, maintain" (from PIE root *al- (2) "to grow, nourish") + -monia suffix signifying action, state, condition (cognate with Greek -men). Derived form palimony coined 1979, from pal (n.). Related: Alimonious.