hissPronunciation: /hɪs/Translate hiss | into French | into German | into Italian | into Spanish Definition of hiss verb [no object] make a sharp sibilant sound as of the letter s:the escaping gas was hissing (of a person) make a sibilant sound as a sign of disapproval or derision:the audience hissed loudly at the mention of his name [with object] express disapproval of (someone) by hissing:he was hissed off the stage [reporting verb] whisper something in an urgent or angry way: [with direct speech]:‘Get back!’ he hissed noun a sharp sibilant sound:the spit and hiss of a cornered cat a sibilant sound used to convey disapproval or derision:the audience greeted this comment with boos and hisses [mass noun] electrical interference at audio frequencies:tape hissOrigin: late Middle English (as a verb): imitativehiss in other Oxford dictionaries Definition of hiss in the US English dictionary