Apa itu extravagant? Apa itu extravagant? Given to lavish or imprudent expenditure: extravagant members of the imperial court. Exceeding reasonable bounds: extravagant demands. See Synonyms at excessive.Extremely abundant; profuse: extravagant vegetation. Unreasonably high; exorbitant: extravagant fees. Archaic Straying beyond limits or bounds; wandering.