U₁N₁S₁T₁A₁B₃L₁E₁

10 points

UNSTABLE is validvalid

not stable [adj UNSTABLER, UNSTABLEST] : UNSTABLENESS [n]

86,950 of 196,601 in NWL2023·also valid in CSW24

not stable, also INSTABLE [adj UNSTABLER, UNSTABLEST, UNSTABLY]

265,337 of 280,887 in CSW24·also valid in NWL2023