B₃A₁C₃K₅S₁T₁A₁I₁R₁S₁

18 points

BACKSTAIRS is validvalid

BACKSTAIR, a stair at the back of a building [n]

121,681 of 196,601 in NWL2023·also valid in CSW24

behind the scenes, unobserved by the public [adj]

16,876 of 280,887 in CSW24·also valid in NWL2023