ETYM French animosité, from Latin animositas. Related to Animose, Animate.
A feeling of ill will arousing active hostility; SYN. animus, bad blood.
Active dislike, hostility.

ETYM Latin hostilitas: cf. French hostilité.
1. A hostile (very unfriendly) disposition; SYN. ill will.
2. A state of deep-seated ill-will; SYN. enmity, antagonism.
3. Acts of overt warfare; SYN. belligerency.
4. The feeling of a hostile person; SYN. enmity, ill will.