しかしマナーの悪いヤツだ。の英語

But he has bad manners.

He is unrefined but not vulgar [crude].

But he has an air of aloofness.

He is a kind‐hearted but timid person.

He is reticent but kind.

He hardly speaks but he's kind.

But, since he has a laid-back personality, he appears to be irresponsible.

He is a good man, only he is too good-natured.

He has a foul tongue, but he means no harm―means no offence.

However, he was smart.

But, he is a very cute dog.

She may speak harsh words, but deep inside she is a kind person, you know.

With all his boasting, he is a coward.

For all his faults, he is a good fellow.

Though he is kooky, he isn't a bad person.

He was impolite, not to say rude.

Just between you and me, he is a liar.

He dresses like a gentleman, but he speaks and behaves like a clown

His dress is that of a gentleman, but his speech and behaviour are those of a clown.

Truly, you are a person who will not learn from experience.

Truly, you do not learn from experience.

Truly, you never learn from experience.

Truly, you never learn.

He is strict, but he is kind.

He is really nice, but he is a very quick tempered person.

If it were not for his idleness, he would be a nice fellow.

He's handsome and nice, but he has no class.

He often makes mistakes, but he is no fool.

He is clumsy but he has a good heart.

He has a foul tongue, but is, at heart,―at bottom,―a good fellow.