Letter before tau
The crossword clue "Letter before tau" is answered by SIGMA, a 5-letter entry. Used 15 times across 8 distinct years; most recently in 2026; first recorded in 2016. It appears in 10 publications in the xd corpus. Every figure on this page comes from the collection data itself, never from a guess.
The answer
SIGMA
5 letters. See every clue for this answer on the SIGMA answer page.
Used 15 times across 8 distinct years; most recently in 2026; first recorded in 2016. It appears in 10 publications in the xd corpus. Frequency and last-seen figures come from the xd crossword corpus only.
Other clues for SIGMA
Every other clue in this collection answered by SIGMA, most used first.
- Greek letter - used 39 times, most recently in 2011
- Frat letter - used 26 times, most recently in 2024
- Greek "S" - used 19 times, most recently in 2026
- Letter after rho - used 18 times, most recently in 2025
- Letter between rho and tau - used 13 times, most recently in 2026
- Summation symbol in math - used 12 times, most recently in 2025
- Sorority letter - used 10 times, most recently in 2022
- Standard deviation symbol - used 9 times, most recently in 2024
- Fraternity letter - used 7 times, most recently in 2023
- Summation symbol - used 6 times, most recently in 2019
Related clues
Clues in this collection of the same answer length that share a word with this clue, or match its answer pattern when no word is shared. Most used first.
- Last Greek letter - OMEGA, used 187 times
- First Greek letter - ALPHA, used 108 times
- Greek letter - THETA, used 103 times
- First Hebrew letter - ALEPH, used 90 times
- Last letter - OMEGA, used 83 times
- Letter before iota - THETA, used 79 times
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