the.com/animosity

Anger that moved in, unpacked its bags, and started paying rent.

means A deep, lasting hostility or ill will toward someone, not just a passing flash of temper.

from From Latin animus, meaning 'spirit, mind, or soul' — but also 'strong feeling' or 'passion.' The suffix -osity piles on the intensity, turning plain spirit into something charged and combative. The same animus root gives us 'animate' and 'animal' (living, breathing things), a reminder that this word was originally about vital spirit before it curdled into grudge-holding.

old meaning
once meant vigor or courage, not hostility
shared root
animus and animosity both come from anima, breath or soul
sibling word
animated shares the same spirited root
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