23rd Greek letter
The crossword clue "23rd Greek letter" is answered by PSI, a 3-letter entry. Used 36 times across 21 distinct years; most recently in 2026; first recorded in 1998. It appears in 11 publications in the xd corpus. Every figure on this page comes from the collection data itself.
The answer
PSI
3 letters. See every clue for this answer on the PSI answer page.
Used 36 times across 21 distinct years; most recently in 2026; first recorded in 1998. It appears in 11 publications in the xd corpus. Frequency and last-seen figures come from the xd crossword corpus only.
Other clues for PSI
Every other clue in this collection answered by PSI, most used first.
- Greek letter - used 244 times, most recently in 2024
- Letter before omega - used 132 times, most recently in 2026
- Omega preceder - used 110 times, most recently in 2025
- Chi follower - used 64 times, most recently in 2026
- Trident-shaped Greek letter - used 58 times, most recently in 2026
- Trident-shaped letter - used 57 times, most recently in 2026
- Penultimate Greek letter - used 48 times, most recently in 2026
- Pressure meas. - used 47 times, most recently in 2026
- Fraternity letter - used 45 times, most recently in 2022
- Letter after chi - used 35 times, most recently in 2026
- Air pump letters - used 33 times, most recently in 2024
- Next-to-last Greek letter - used 30 times, most recently in 2025
- Pitchfork-shaped letter - used 29 times, most recently in 2026
- Tire pressure meas. - used 28 times, most recently in 2026
- Sorority letter - used 27 times, most recently in 2026
- Tire letters - used 25 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.
- Greek vowel - ETA, used 549 times
- Greek letter - ETA, used 512 times
- Greek letter - RHO, used 240 times
- Greek H - ETA, used 206 times
- Greek letter - TAU, used 198 times
- Curvy letter - ESS, used 177 times
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