One who is determined to exact full vengeance for wrongs done to him
A
Virulent
B
Vindictive
C
Usurer
D
Vindicator
Correct Answer: Vindictive
One word substitute is Vindictive.Virulent: bitterly hostile.
Vindictive: having or showing a strong or unreasoning desire for revenge.
Usurer: a person who lends money at unreasonably high rates of interest.
Vindicator: a person who clears someone of blame or suspicion.