delusion

1. N-COUNT A delusion is a false idea. 錯覺

I was under the delusion that he intended to marry me. 我有一種錯覺，他要娶我。

2. N-UNCOUNT Delusion is the state of believing things that are not true. 妄想

Insinuations about her mental state, about her capacity for delusion, were being made. 儅時有對她的精神狀態的影射——說她有妄想症的影射。