S₁T₁R₁E₁N₁G₂T₁H₄E₁N₁I₁N₁G₂

18 points

STRENGTHENING is validvalid

STRENGTHEN, [v STRENGTHENED, STRENGTHENING, STRENGTHENS] : STRENGTHENER [v]

185,320 of 196,601 in NWL2023·also valid in CSW24

the act of making stronger [n -S]

236,270 of 280,887 in CSW24·also valid in NWL2023