Is Luxuriant an Adjective or Adverb?

LUXURIANT (adjective) definition and synonyms | Macmillan Dictionary.

Is luxuriant an adjective?

abundant or lush in growth, as vegetation. producing abundantly, as soil; fertile; fruitful; productive: to settle in luxuriant country. richly abundant, profuse, or superabundant.

What is a luxuriant?

1a : yielding abundantly : fertile, fruitful. b : characterized by abundant growth : lush luxuriant vegetation. 2 : abundantly and often extravagantly rich and varied : prolific.