C1 adjective /vɪnˈdɪk.tɪv/
Vindictive
復讐心の強い
Meaning
having or showing a strong or unreasoning desire for revenge
Example
His vindictive behavior towards his former colleagues was unprofessional.
彼の復讐心に満ちた行動は、以前の同僚に対して不適切でした。