What are synonyms for the word quarrel?

Here are some synonyms for "quarrel," grouped by intensity and context:

General:

* Argument

* Dispute

* Altercation

* Squabble

* Disagreement

* Contention

* Friction

* Clash

* Row

* Fray

* Bust-up

More intense:

* Feud

* Brawl

* Fight

* Ruckus

* Donnybrook

* Tumult

Less intense:

* Difference of opinion

* Disaccord

* Discrepancy

* Misunderstanding

* Rift

Formal:

* Contention

* Controversy

* Disputation

Informal:

* Spat

* Tiff

* Bickering

* Sniping

The best synonym to use will depend on the specific context and the level of intensity you want to convey.