acrimony

bitterness or sharp hostility

Root

acer / acu / acr: sharp, pointed, keen, or bitter

Other words with the acer / acu / acr root

acerbic: sharp or bitter in tone
acrid: sharp, bitter, or irritating
acuity: sharpness of perception or sense
acumen: sharp practical judgment
acute: sharp, intense, or keen
exacerbate: to make worse

Acrimony is sharpness in the air between people.

The debate began with disagreement and ended in acrimony.

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