SIBILATION Scrabble 12 Words With Friends 15 Definition noun a fricative sound (especially as an expression of disapproval). — synonyms: hiss, hissing, hushing, fizzle noun pronunciation with a sibilant (hissing or whistling) sound. — synonyms: assibilation See all 315 words you can make from SIBILATION → 10-letter words Words starting with S Words ending with N ← Unscramble different letters