the practice of doing or saying things to make yourself seem more powerful or important

The diaries record his time in office matter-of-factly, without the need for self-congratulation or self-aggrandizement.

He comes across as bright and likable, but he flirts too frequently with self-aggrandisement. 他表现得很聪明，也很讨人喜欢，但他过于频繁地自我吹嘘。