vindictive (adj) - vengeful; inclined or disposed to seek revenge [vin-dik-tiv]
BREAKDOWN: VIN- (force) + DICT- (speak) + -IVE (prone to)
NOTE: Vindictive has the same basic roots and origins as vindicate but has evolved to focus more on revenge than redemption.
“It is not true that suffering ennobles the character; happiness does that sometimes, but suffering, for the most part, makes men petty and vindictive.” —W. Somerset Maugham