phraseUKdisapproving to think and act as if you are very important: 自以为了不起 Since he got his new job, he's been very full of his own importance.自从得到新工作以来，他总是自以为了不起。 He's an awful man - full of his own importance. He was too full of his own importance to notice anyone else around him. I worked with her back in the nineties and she had a reputation for being full of her own importance. She was full of her own importance - you know the type. See also