vendetta (n.)
- acrimony
- altercation
- animosity
- animus
- argument
- bicker
- bitterness
- brawl
- broil
- conflict
- contention
- controversy
- dispute
- embroilment
- enmity
- feud
- fight
- fracas
- fuss
- hatred
- imbroglio
- logomachy
- polemic
- quarrel
- rancor
- reprisal
- retaliation
- revenge
- rhubarb
- rivalry
- row
- set-to
- snarl
- soreness
- sourness
- spat
- squabble
- strife
- tiff
- tussle
- vengeance
- venom
- virulence
- vitriol
- words
- wrangle