The voiced retroflex sibilant fricative is a type of consonantal sound, used in some spoken languages. The symbol in the International Phonetic Alphabet that represents this sound is ⟨ʐ⟩, and the equivalent X-SAMPA symbol is z`. Like all the retroflex consonants, the IPA symbol is formed by adding a rightward-pointing hook extending from the bottom of a z (the letter used for the corresponding alveolar consonant).