B₃I₁D₂I₁R₁E₁C₃T₁I₁O₁N₁A₁L₁

18 points

BIDIRECTIONAL is validvalid

[adj] : BIDIRECTIONALLY [adv]

178,059 of 196,601 in NWL2023·also valid in CSW24

involving two usually opposite directions [adj BIDIRECTIONALLY]

22,728 of 280,887 in CSW24·also valid in NWL2023