wantonly

Mane (Îngilîzî)

in a wanton manner.

Hevwate

licentiously

lasciviously

promiscuously

wilfully

arbitrarily

groundlessly

heedlessly

if only

lewdly

libidinously

light-heartedly

luxuriously

playfully

random

recklessly

sportively

unadvisedly

uselessly

voluptuously

for no reason

without cause

arbitrary

at will

deliberately

frolicsomely

Werger

frustra

légèrement

mutwillige

üppig

impudiquement

de manière arbitraire

lestement

baldadig

dartel

moedwillig

zinloos

بعشوائية

speels

liederlich

Etîmolojî (Îngilîzî)

Ji Middle English mîras hatiye girtin: wantounly

In summary

From Middle English wantounly, wantounliche, equivalent to wanton + -ly.