I. | ̷ ̷ ̷ ̷ ̷ ̷+ noun
Etymology: megal- + maniac
: one affected with or exhibiting megalomania
II. adjective
or meg·a·lo·maniacal “+ ; or meg·a·lo·manic “+
: belonging to, exhibiting, or affected with megalomania
a once megalomaniac motion picture industry — Cecil Beaton