IPA: //ˈræŋkərəs//
KK: /ˈræŋkərəs/
Having a strong feeling of anger and hatred towards someone, often because of a past injury or offense.
Their rancorous debate left the audience feeling uncomfortable.
Rancorous → It is formed from "rancor" (from Latin "rancor", meaning bitterness or resentment) and the suffix "-ous" (meaning full of). The word "rancorous" describes someone who is full of bitterness or resentment.
Think of 'rancor' as a feeling of bitterness, and remember that 'rancorous' means being full of that bitterness.