少し話しただけでその人を馬鹿だと決めつけるのはおかしいの英語

They were talking about me, and so I discreetly kept out of the way.

verbal misrepresentation intended to take advantage of you in some way

If you say anything to him, he will snap at you [bite your head off].

a way of talking where one can guess the speaker's true feelings

You must be careful in speaking to him, for he is apt to take offence.

Your brutal way of speaking outrages people's feelings.

Between ourselves, he is not to be relied upon.

Your tongue gives offence.

What I said in fun―in joke―in jest―in sport―was taken seriously.

an aloof refusal to speak to someone you know

spiteful words spoken to a person whom one does not like

My ears are burning.

You had better not say such things, unless you wish to give offence.

Your tongue gives offence.

You give offence by your foul tongue

It was imprudent of you to speak so candidly.

to speak quietly in order not to be overheard by others

the action of responding with the exact same words as was used by the person with whom one is speaking

You are right, whatever anyone else [whatever others] may say.

Some people think talking back to an adult is rude.

Saying something carelessly can hurt the person that you are talking to.

the hecklers pelted the discombobulated speaker with anything that came to hand

The words is misleading.

of a person, a state of doing things for mercenary reasons

a word spoken to a failure who did not heed advice

If you listen to everything people say, there will be no end to it.

If you say a disagreeable thing lightly, you will not give offence.

That comes of not minding what I say

You must be careful in speaking to him, for he is quick to take offence.

If you keep saying senseless things, you'll eventually be sorry for it.