___ qua non
The crossword clue "___ qua non" is answered by SINE, a 4-letter entry. Used 112 times across 58 distinct years; most recently in 2024. It appears in 17 publications in the xd corpus. Every figure on this page comes from the pilot data itself.
The answer
SINE
4 letters. See every clue for this answer on the SINE answer page.
Used 112 times across 58 distinct years; most recently in 2024. It appears in 17 publications in the xd corpus. Frequency and last-seen figures come from the xd crossword corpus only.
Other answers for this clue
The same clue has also been answered these ways in the xd corpus. Answers inside this pilot link to their own answer page.
- SINES (1 uses in xd)
Other clues for SINE
Every other clue in this pilot answered by SINE, most used first.
- Trig ratio - used 106 times, most recently in 2026
Related clues
Pilot clues 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.
- Wild guess - STAB, used 480 times
- Appear - SEEM, used 451 times
- Ooze - SEEP, used 449 times
- "Auld Lang ___" - SYNE, used 447 times
- Withered - SERE, used 400 times
- Location - SITE, used 390 times
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