GENTLE is validvalid

mild [adj GENTLER, GENTLEST] : GENTLENESS [n], GENTLY [adv] / to tame [v GENTLED, GENTLES, GENTLING]

20,727 of 196,601 in NWL2023·also valid in CSW24

to tame [v GENTLED, GENTLING, GENTLES] / mild and refined in manners [adj GENTLER, GENTLEST, GENTLY]