T₁H₄A₁N₁K₅L₁E₁S₁S₁

16 points

THANKLESS is validvalid

unlikely to be appreciated [adj] : THANKLESSLY [adv], THANKLESSNESS [n]

116,654 of 196,601 in NWL2023·also valid in CSW24

giving no reward [adj THANKLESSLY]

248,169 of 280,887 in CSW24·also valid in NWL2023