sibilating From WikiWord, the free dictionary English Contents DefinitionsRelated wordsReferences DefinitionsverbTo hiss.To speak with a hissing sound.nounA hissing sound Related wordsSynonymssisshisssizzsifflementsibilantsibilatorsizzlinghissingsqueakingsoughingwhishfizzlesifflesoughpishgurgling References Wiktionary — sibilating Wikipedia — sibilating