rancour or US rancor /rangˈkər/

1. Harboured bitterness of mind, speech, etc
2. Deep-seated enmity
3. Spite
4. Virulence
5. Sourness (Shakespeare)

ranˈcorous adjective

• joyless
• joylessly
• joylessness
• joylessnesses
• joyous
• joyously
• joyousness
• joyousnesses
• joypad
• joypads
• joypop
• joypopped
• joypopping
• joypops
• joyridden
• joyride
• joyrider
• joyriders
• joyrides
• joyriding
• joyridings
• joyrode
• joys
• joystick
• joysticks