Many visitors complained of his bad manners and self-importance.

许多访客抱怨他的不礼貌和妄自尊大。

《柯林斯英汉双解大词典》

And increased his sense of self-importance .

也提升了他的妄自尊崇。

youdao

Self-importance, not clarity, seems to be the main concern.

自负，不清晰，似乎是一个主要的问题。

youdao

He says the almost overpowering silence and deepness of the Grand Canyon shakes people at least briefly out of their self-importance.

VOA: special.2009.10.07

Their jokes, while juvenile, were innocuous, whereas Richards displayed a self-importance verging on grandiosity.

WSJ: Best of the Web Today: Revenge of the Nerds

They have the visceral impact of documentary reportage without the self-importance and general lugubriousness.

FORBES: The hierarchy of reality TV shows (Or: A defense of my desire to be on Survivor)

AOL. In theory, this could help to revitalise an in-bred geeky culture that has suffered from complacency and self-importance.

ECONOMIST: Time for an outsider