delusion

US /dɪˈluː.ʒən/
UK /dɪˈluː.ʒən/
"delusion" picture
1.

妄想, 錯覺

a belief that is not true and is not based on reality, especially as a symptom of mental illness

:
He suffers from the delusion that he is a famous rock star.
他患有自己是著名搖滾明星的妄想
It was a common delusion among the patients.
這是患者中常見的妄想
2.

錯覺, 欺騙

the state of being deceived or misled

:
He was under the delusion that he could fly.
他有自己能飛的錯覺
Living in a constant state of delusion can be dangerous.
生活在持續的錯覺中可能是危險的。