彼は本気で言っている。の英語

He means it seriously.

He lightly references that.

He speaks politely.

He speaks frankly.

He had the nerve to say that.

He has a good command of language.

He is familiar with that.

he said so literally

I have heard him say so.

He is plain-spoken.

he guessed right

He is all you tell me.

He maintains that it is so

He declares that it is so

He stands to it that it is so

He will have it that it is so

He asserts the fact.

He consented on the spot.

He complains about that.

He says clever things.

He says the things that he wants.

He says whatever he wants to.

He exaggerates that.

He said it was so―（どこまでもそうだと主張した）―He asserted it to be so―asserted the fact―（なるほどそうだと言った）―He admitted the fact.

He has an unbridled tongue.

He mentioned it.

He is peevish―querulous.

He writes what he wants to say.

He is a really talkative person.

He seems to be telling the truth.