megalomania
n.
"delusions of greatness," 1866, from French mégalomanie; see megalo- + mania "madness."
〔李〕n.自大狂 [-mania=unreasonable fondness of] ←megalo-[GK] =great特大
〔李〕n. 自大狂；妄自尊大 [megalo- =great] ←-mania [GK] =unusual or unreasonable fondness of表示“⋯狂；