U₁N₁S₁O₁U₁N₁D₂

8 points

UNSOUND is validvalid

not sound [adj UNSOUNDER, UNSOUNDEST] : UNSOUNDLY [adv], UNSOUNDNESS [n]

55,402 of 196,601 in NWL2023·also valid in CSW24

not sound [adj UNSOUNDER, UNSOUNDEST, UNSOUNDLY]

265,258 of 280,887 in CSW24·also valid in NWL2023