1. (imp. & p. p.) of Stifle.

2. (a.) Stifling.

arcane bated blurred breathy cabalistic censored choked choking classified close closed concealed croaking crushed cryptic damped dampened dark dead deadened drawling drawly dull dulled dysphonic enigmatic esoteric flat guttural harsh hawking hermetic hidden hoarse hush-hush inarticulate indistinct latent lisping mispronounced muffled muted muzzy mysterious nasal occult quashed quavering quelled repressed restricted secret shaking shaky smashed smothered snuffling softened sordo squashed squelched strangled subdued suffocated suppressed thick throaty top secret tremulous twangy ulterior unbreatheable under security under wraps undisclosable undisclosed undivulgable undivulged unrevealable unrevealed unspoken untellable untold unutterable unuttered unwhisperable velar