delusionalKK [dɪˋluʒənəl] /dɪˈluʒənəl/形容詞1不切實際的、痴心妄想的、異想天開的口語Anyone who thinks this plan will work is completely delusional.任何覺得這個計畫會成功的人都太不切實際了。2妄想的、有妄想症的醫學The patient became delusional and believed people were following him.這名病患出現妄想,認為有人在跟蹤他。