F₄I₁R₁E₁P₃R₁O₁O₁F₄S₁

18 points

FIREPROOFS is validvalid

FIREPROOF, [v FIREPROOFED, FIREPROOFING, FIREPROOFS] : FIREPROOFING [v]

128,280 of 196,601 in NWL2023·also valid in CSW24

FIREPROOF, to make proof against fire [v]

88,962 of 280,887 in CSW24·also valid in NWL2023