Hebrew alphabet written from right to left. It has 22 letters, five of which use different forms at the end of a word. In the traditional form, vowels are indicated by the weak consonants Aleph (), He (), Vav (), or Yodh () serving as vowel letters, or "matres lectionis": the letter is combined with a previous vowel and becomes silent, or by imitation of such cases in the spelling of other forms. Also, a system of vowel points to indicate vowels (diacritics), called niqqud, was developed. In modern forms of the alphabet, as in the case of Yiddish and to some
Biblical Hebrew source for the modern Hebrew alphabet. All of these scripts were lacking letters to represent all of the sounds of Biblical Hebrew, though these sounds are reflected in Greek and Latin transcriptions/translations of the time. These scripts originally only indicated consonants, but certain letters, known by the Latin term "matres lectionis", became increasingly used to mark vowels. In the Middle Ages, various systems of diacritics were developed to mark the vowels in Hebrew manuscripts; of these, only the Tiberian vocalization is still in wide use. Biblical Hebrew possessed a series of "emphatic" consonants whose precise articulation is disputed, likely ejective