delusions of grandeur 夸大妄想
paranoia delusions 偏执妄想
persecutory delusions 被害妄想
religious delusions 宗教妄想
A: Do you think he is telling the truth?
A：你觉得他在说实话吗？
B: No, I think he is lost in his own delusions.
B：不，我觉得他沉溺在自己的妄想中了。
1) 妄想
2) 幻觉
3) 不切实际的幻想
1. 妄想，幻觉
noun
1. false beliefs that are held despite being contradicted by reality
Synonym: hallucinations, fantasies