O₁C₃T₁A₁G₂O₁N₁A₁L₁

12 points

OCTAGONAL is validvalid

having eight sides [adj] : OCTAGONALLY [adv]

106,989 of 196,601 in NWL2023·also valid in CSW24

having eight sides and eight angles [adj OCTAGONALLY]

162,477 of 280,887 in CSW24·also valid in NWL2023