(imp. & p. p.) of Smother.

arcane bated cabalistic censored classified close closed concealed crushed cryptic damped dampened dark dead deadened dull dulled enigmatic esoteric flat hermetic hidden hush-hush latent muffled muted mysterious occult quashed quelled repressed restricted secret smashed softened sordo squashed squelched stifled subdued suffocated suppressed top secret ulterior unbreatheable under security under wraps undisclosable undisclosed undivulgable undivulged unrevealable unrevealed unspoken untellable untold unutterable unuttered unwhisperable