affectedly grand or important; pompous

grandiose words.

more complicated or elaborate than necessary; overblown

a grandiose scheme.

grand in an imposing or impressive way.

Psychiatry . having an exaggerated belief in one's importance, sometimes reaching delusional proportions, and occurring as a common symptom of mental illnesses, as manic disorder.

adjective

calm , moderate , small , unpretentious

adjective

affected , ambitious , august , bombastic , cosmic , egotistic , flamboyant , fustian , grand , high-falutin’ , high-flown , imposing , impressive , lofty , lordly , magnificent , majestic , monumental , noble , ostentatious , overwhelming , pompous , pretentious , purple * , royal , showy , splashy , stately , unfathomable , vast , baronial , magnific , princely , regal , splendid , sublime , superb , hoity-toity , puffed-up , puffy , self-important