1. affectedly grand or important; pompous: grandiose words.
2. more complicated or elaborate than necessary; overblown: a grandiose scheme.
3. grand in an imposing or impressive way.
4. 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.
"ideals can be grandiose in conceptions."
"projects can be grandiose."
"schemes can be grandiose."
"plans can be grandiose."
"rhetorics can be grandiose."
This list can help you learn new vocabulary more quickly and be able explore other words more easily.