lustily (adv.) Look up lustily at Dictionary.com
early 13c., lustliche, "willingly, eagerly, readily;" see lusty + -ly (2). Meaning "with pleasure, voluptuously" is c. 1300; meaning "vigorously, energetically" is c. 1400. Sometimes 15c.-16c. with a sense "lustfully, carnally," but this now goes with lustfully.