Synonyms for sizzing at thesymbolofra.win with free online thesaurus, antonyms, and definitions. Dictionary and Word of the Day. Verb: sizz. Express or utter with a hiss - hiss, siss, sibilate; Make a sharp hissing sound, as if to show disapproval - hiss, siss, sibilate. Derived forms: sizzed. sizzing YouTube Statistics and Summary Page. Discover daily channel statistics, estimated earnings, sizzing ranking charts, and more! Provided by.