foe, enemy, revenge, grudge, feud
仇 centers on a hostile personal relationship: an enemy or foe, and the lasting resentment, grudge, or desire for revenge that comes from it. The feud sense is a natural extension of that ongoing enmity.
仇 combines 亻 (person) with 九, which likely acts as a phonetic component. The character expresses the idea of a personal enemy or matched opponent.
A person 亻 beside the number nine 九: imagine nine grudges held against one person, making them a bitter foe seeking revenge.
For キュウ, picture a foe holding a grudge for nine (九, きゅう) years: nine -> キュウ, and the long-held resentment fuels the feud.
foe; enemy; rival
mutual enemies
bitter enemy
vengeance; revenge; retaliation
to harm; to injure; to damage
to backfire; to have a harmful result
to do (someone) a wrong; to do (someone) an ill turn; to take revenge
to backfire; to have a harmful result
to do (someone) a wrong; to do (someone) an ill turn; to take revenge
to take revenge
to repay meanness with kindness
to avenge (someone) by striking down their killer
revenge; bitter enemy
retaliation; revenge
reprisal; revenge
to return evil for good; to return a favour with spite (favor)
Pardon makes offenders
deep rivers move in silence; shallow brooks are noisy; those who know little talk much