overextravagant
/ˌəʊv(ə)rɪkˈstravəɡ(ə)nt/ /ˌəʊv(ə)rɛkˈstravəɡ(ə)nt/adjective
Highly extravagant; too extravagant; profligate, immoderate.
Origin
Late 18th century; earliest use found in Samuel Pratt (1749–1814), writer and actor. From over- + extravagant.