Odious

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late Middle English: from Old French odieus, from Latin odiosus, from odium ‘hatred’.

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From Middle English odious, from Old French odieus, from Latin odiōsus, from odium(“hate”).

etymonline

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odious (adj.)

late 14c., "hateful, deserving of hatred; hated, regarded with aversion or repugnance," from Anglo-French odious, from Old French odieus (late 14c., Modern French odieux) or directly from Latin odiosus "hateful, offensive, unpleasant," from odium "hatred" (see odium). Related: Odiously; odiousness.