The man is not humble, but he puts on an affectation of humility.

这个男人并不谦虚，却装作一副谦虚的样子。

youdao

Wu: Nevertheless, media, like the other side it reveals, also shows deceit, affectation, lie and hypocrisy, which seems similar to the mottles and the faintly discernible traces on your painting.

吴：可是媒体也正向它展现的另一面一样，呈现出蒙蔽、矫饰、谎言与伪善，这与你绘画中的斑驳和若隐若现的痕迹似乎类同。

youdao

Bizarrely, one of Dr Lomborg's critics in Scientific American criticises as an affectation the book's insistence on documenting every statistic and every quotation with a reference to a published source.

ECONOMIST: ��The Skeptical Environmentalist��

For most of us soccer is just an odd affectation of foreigners, like minuscule cars, pink shirts on men and the metric system.

ECONOMIST: Island story