Failure to do so risks rendering the ruling a hollow gesture
He has hollow cheeks.
has been whittled down to a set of hollow threats
hollow (adj): hueco. || Hueco, falso. Insincero o insignificante. || hundido (mejillas).
hollow (noun): hueco. || valle, hondonada. Valley (US).
to hollow: convertir una superficie plana en una cóncava o convexa.
to hollow out: vaciar, quitarle la parte interna a algo, ahuecar.