Animosity
late Middle English (originally in the sense ‘spirit, courage’): from Old French animosite or late Latin animositas, from animosus ‘spirited’, from Latin animus ‘spirit, mind’. The current sense dates from the early 17th century.
wiktionary
From French animosité, from Latin animositas(“courage, spirit, vehemence”), from animosus, from animus(“courage, spirit, mind”); see animose, animate, transitive verb
etymonline
animosity (n.)
early 15c., "vigor, bravery" (a sense now obsolete), from Old French animosité (14c.) or directly from Latin animositatem (nominative animositas) "boldness, vehemence," from animosus "bold, spirited," from animus "life, breath" (from PIE root *ane- "to breathe"). Sense of "active hostile feeling" is first recorded c. 1600, from a secondary sense in Latin.
