set to
[verb]
Synonyms: begin, commence, embark (on or upon), enter, get off, launch, open, start, take up, tee off, pitch in, buckle (down), fall to, jump (in or into), wade (in or into)
[noun]
Synonyms: brawl, affray, bobbery, broil, fight, fracas, fray, row, scrap, scuffle, quarrel, altercation, bickering, dispute, falling-out, hassle, rhubarb, run-in, encounter, brush, skirmish, velitation

[TahlilGaran] English Synonym Dictionary ▲

set to phrasal verb British English (see also set)
to start doing something eagerly and with determination:
If we all set to, we’ll finish the job in half an hour.

[TahlilGaran] Dictionary of Contemporary English ▲

ˈset-to noun [countable usually singular] informal
a short fight or quarrel Synonym : argument:
Tom and I had a bit of a set-to last night.
⇒ set to at set¹

[TahlilGaran] Dictionary of Contemporary English ▲

set to
v.
1. To make a serious beginning.
Charlie took a helping of turkey, grabbed his knife and fork, and set to.
2. To start to fight.
One man called the other a liar and they set to.

[TahlilGaran] English Idioms Dictionary ▲