DISCERN is validvalid

to perceive [v DISCERNED, DISCERNING, DISCERNS] : DISCERNABLE [adj], DISCERNABLY [adv], DISCERNER [n], DISCERNINGLY [adv]

37,826 of 196,601 in NWL2023·also valid in CSW24

to perceive, also SCERNE [v -ED, -ING, -S]