Diminutive of Letitia or Patricia, meaning joy or noble respectively.
Tisha functions primarily as a diminutive with rich dual ancestry. On one path it shortens Leticia (or Laeticia), from the Latin laetitia, meaning "joy," "happiness," or "gladness" — a deeply optimistic name that traveled from Roman antiquity through medieval saints into the modern world. On the other path it contracts Patricia, from the Latin patricius, meaning "of noble birth" or "patrician," a name that entered wide use in the English-speaking world largely through Irish Catholic communities devoted to Saint Patrick.
Both roots, however different, arrive at Tisha carrying either joyfulness or nobility. The name also resonates within Jewish tradition through an entirely different channel: Tisha B'Av (the ninth of Av) is the most solemn fast day in the Jewish calendar, commemorating the destruction of both Temples in Jerusalem and a series of other national tragedies. While this association is liturgical rather than naming-culture, it gives the syllables Tisha a layer of historical weight for those aware of it.
As a standalone given name independent of any longer form, Tisha gained particular traction in African American communities from the mid-20th century onward, part of a broader embrace of melodic, distinctive names. Tisha Campbell, the actress best known for her role as Gina on the beloved 1990s sitcom Martin, brought the name considerable visibility and affection for a generation of viewers. The name has a bright, open quality — the soft T, the long 'ee' sound, the open 'a' — that makes it feel genuinely warm and approachable. It is a name that sounds like it was chosen by someone who wanted the child to feel welcomed into a room the moment their name was spoken.