extravagantly

adverbs

in an abundant manner

"they were abundantly supplied with food"; "he thanked her profusely"

in a wasteful manner

"the United States, up to the 1920s, used fuel lavishly, mainly because it was so cheap"

extravagantly, lavishly

is derived from

in a rich and lavish manner

"lavishly decorated"

extravagantly, lavishly, richly