a proverb meaning that excessive self-deprecation is itself a form of boasting; claiming humility can be a way to seek praise
彼は『卑下も自慢の中』ということわざを引用して、あまり謙遜し過ぎないように言った。
He quoted the proverb 'even self-deprecation is a form of boasting' and told me not to be overly humble.