L₁A₁B₃O₁R₁I₁O₁U₁S₁N₁E₁S₁S₁

15 points

LABORIOUSNESS is validvalid

the quality of being laborious [n LABORIOUSNESSES]

181,729 of 196,601 in NWL2023·also valid in CSW24

the quality of requiring great exertion or long effort [n -ES]

131,141 of 280,887 in CSW24·also valid in NWL2023