Tums; It is not an Acronym, but a WORD. A definition. It’s in the Torah. It is translated as A “Wonderful Sign”. (Synonymous with “OS”) ??? ?? ????. Not necessarily in a Positive sense. But this term is currently used to describe a “Promise” or “Blessing” come true. Mainly, (Anecdotally) by Chassidic Rebbes. In the Sephardic, or Yemenite world, there is the equivalent ????”?, ????? ??????. The Sephardic (Authentic) Mekubalim are so defined.