ṣādē

Ṣade (also spelled Ṣādē, Tsade, Ṣaddi, Ṣad, Tzadi, Sadhe, Tzaddik) is the eighteenth letter of the Semitic abjads, including Phoenician Çādē Phoenician sade.svg, Hebrew Ṣādi צ, Aramaic Ṣāḏē Sade 1.svg, Syriac Ṣāḏē ܨ, and Arabic Ṣād ص. Its oldest sound value is probably /sˤ/, although there is a variety of pronunciation in different modern Semitic languages and their dialects. It represents the coalescence of three Proto-Semitic "emphatic consonants" in Canaanite. Arabic, which kept the phonemes separate, introduced variants of ṣād and ṭāʾ to express the three (see ḍād, ẓāʾ). In Aramaic, these emphatic consonants coalesced instead with ʿayin and ṭēt, respectively, thus Hebrew ereṣ ארץ (earth) is araʿ ארע in Aramaic.