Feeling or showing strong desire or lust, often in an excessive way.
From Cupid (the Roman god of love, whose Latin name is Cupido) + -inous (suffix meaning 'full of'). The term evolved in English Renaissance literature to describe lustful or lustrous behavior.
The suffix '-inous' in words like 'ruinous' and 'glutinous' comes from Latin, but 'cupidinous' is pretty rare now—writers prefer simpler words like 'lustful' or 'greedy'!
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