WANTON is validvalid

immoral [adj WANTONER, WANTONEST] / to behave immorally [v WANTONED, WANTONING, WANTONS] : WANTONER [n]

30,986 of 196,601 in NWL2023·also valid in CSW24

thoughtlessly cruel [adj WANTONER, WANTONEST, WANTONLY] / to behave in a wanton fashion [v -ED, -ING, -S]