つまらぬ事で喧嘩をするな。の英語

Don't quarrel over trifles.

Don't make a big deal out of nothing.

Don't fight.

Don't waste time on pointless disputes.

an act of willingly taking up a quarrel

Don't fight

Don't fight.

a person who is willing to quarrel

Whatever the matter may be,―Be the matter what it may,―do your best.

Please cease from quarreling.

Please stop fighting.

Stop that fighting at once!

Fighting won't settle anything.

a disinclination to quarrel

Don't you get on each other's nerves?

Don't you get on each others' nerves?

noisy quarrel

I don't like fights.

Don't do anything stupid.

Don't do anything rash.

Don't be rash.

Don't let a little quarrel come between us.

the action of pretending to have a quarrel

a quarrel about petty points

I swear not to fight for the rest of my life.

Don't do anything stupid.

You guys quit fighting.

a quarrelsome grouch

It takes two to make a quarrel.

If you want to have a row, have it with me.