lavishly
1. [ adverb ] in a wasteful manner
Synonyms: extravagantly
Examples:

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

Related terms: lavish extravagant lavish extravagant
2. [ adverb ] in a rich and lavish manner
Synonyms: extravagantly richly
Examples:

"lavishly decorated"

Related terms: rich lavish rich lavish