de·lu·sionBrE/dɪˈluːʒn/NAmE/dɪˈluːʒn/noun[C]afalsebelieforopinionaboutyourselforyoursituation错觉;谬见;妄想◆thedelusionsofthementallyill精神病患者的妄想◆Don'tgogettingdelusionsofgrandeur(= abeliefthatyouaremoreimportantthanyouactuallyare). 不要变得妄自尊大。[U]theactofbelievingormakingyourselfbelievesththatisnottrue自欺➡ see alsodelude