彼は用心してなかなか本当のことを言わない。の英語

He is shy of telling the truth.

He gives great consequence to the matter, and will not tell it

He disdains to say it.

He has no confidence in his words.

His words carry little conviction.

There is not a scrap of truth in his words.

I don't wholly believe him.

He is cautions of telling secrets―wary of telling secrets.

He is anything but honest.

He never shows his true colors.

He is not good at putting his thoughts into words.

He always begins talking about something and stops half-way.

He's outspoken in his remarks.

He's a complete phoney [fraud].

Everything he does [says] is completely phoney.

He uses guarded language.

he chose his words rather infelicitously

He will not say yes.

It is not wise to go by his word.

He never tells lies.

You must not confide a secret to him, for he will speak on impulse.

He can not have said so in earnest He must have said so in joke

He must have said so in jest.

His words are hardly worth notice.

He is never at a loss for a word.

He doesn't really use colloquialism.

He can not have said so in earnest.

You can not believe a word he says.

You can't believe a word he says.

He's not to be put off with words.