> All the semitic languages omit vowels (although there are some mater lectionis). I think it is just most. Maltese uses the Latin alphabet. Amharic and Tigrin

> All the semitic languages omit vowels (although there are some mater lectionis). I think it is just most. Maltese uses the Latin alphabet. Amharic and Tigrinya use Ge'ez which encodes vowel information. Also Arabizi, Arabic in Latin alphabet, is popular for writing local variations of Arabic.