Definition of megalomanic in English:

megalomanic

Pronunciation /-ˈmanik/

adjective

See megalomania

‘Here we find many of the more megalomanic conclusions: ‘I am God’; ‘I want to be the brightest light, the greatest sun.’’
  • ‘Seriously, just how do people get these megalomanic notions?’
  • ‘His extensive knowledge of historical style contributed to, but was submerged beneath, forms dictated by megalomanic fantasies.’