KNOWING is validvalid

astute [adj KNOWINGER, KNOWINGEST] : KNOWINGNESS [n] / knowledge [n KNOWINGS] / KNOW, to have a true understanding of [v]

43,562 of 196,601 in NWL2023·also valid in CSW24

knowledge [n -S] / astute, crafty [adj KNOWINGER, KNOWINGEST, KNOWINGLY]