甲斐性がない男はダメだ。の英語

A man who lacks resourcefulness is useless.

You ought to know better at your age.

He is a perfect gentleman.

You ought to be ashamed of yourself after all the trouble of being born a man.

not befitting a gentleman

He is a meddler―a busybody.

He lacks firmness of character

He is a weak character

He has no backbone.

He is a perfect gentleman.

He is a slovenly man―a sloven.

a perfect gentleman

He is anything but a gentleman.

Such conduct does not become a gentleman.

a man of fine [mean] character

A man worthy of his salt cannot do such a thing.

A big man is not always robust.

He is a harmless fellow.

I don't want to marry a stupid man!

It I do such a thing, I shall dishonour myself―（他動詞構文にすれば）―Such conduct will dishonour me.

A man should not trouble himself with small matters.

Such conduct is unbecoming in a gentleman―improper for a gentleman―unworthy of a gentleman.

He lacks adaptability.

His conduct is heartless.

He is an awkward man

He is a gawk

He has no head.

He has no head―He is an awkward man―an ungainly person―a clumsy figure―a gawk.

A gentleman wouldn't do such a thing.

He is an unaffable man―a morose man―a sullen fellow―a surly fellow.