Lavish means "generous and extravagant" as an adjective and "to give generously" as a verb. If you don't like it when people lavish you with attention, you might appreciate a lavish spread of excellent food instead. Lavish comes from the Old French lavache meaning "deluge, torrent," referring to rain.

Is Lavish an adverb?

lavishly adverb - Definition, pictures, pronunciation and usage notes | Oxford Advanced Learner's Dictionary at OxfordLearnersDictionaries.com.

Can lavish be a noun?

The act of lavishing.