Refers to a state of being lost in false beliefs or misconceptions, often with a philosophical or religious connotation. Not an everyday word; more common in written or formal contexts.
His idea is nothing more than an illusion.
Cast aside delusions and face the truth.
迷妄 is a literary word for a deluded, mistaken belief in general, whereas 迷信 specifically means a superstition tied to luck or omens.
Composed of 迷 (mei, 'bewilderment') and 妄 (mō, 'delusion'). The exact historical derivation is uncertain, but the kanji components directly reflect the meaning of being lost in false beliefs.