Possessing or characterized by spirit, courage, or passionate determination; full of life and vigor.
From Latin 'animosus' (spirited, brave), derived from 'animus' (spirit, mind). Archaic or poetic in modern usage, preserved mainly in specialized philosophical and literary contexts.
This is the grandfather word of 'animosity'—it originally described someone brave and spirited, but English speakers needed words for the dark side of passion, so 'animosity' split off to mean hostile!
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