liefly
advEtymology From Middle English levely, levelike, lefliȝ, leofliche, from Old English lēoflīċe (“kindly, graciously, gladly, lovingly”), from lēoflīċ, from Proto-Germanic *leubalīka, from Proto-Germanic *leubalīkaz, equivalent to lief + -ly.
1
Archaic willingly; gladly