SMIRK is validvalid

to smile in an affected or smug manner [v SMIRKED, SMIRKING, SMIRKS] : SMIRKER [n], SMIRKINGLY [adv]

12,964 of 196,601 in NWL2023·also valid in CSW24

to smile in a smug manner, also SMERK [v -ED, -ING, -S]