"__ upon a time..."
The crossword clue ""__ upon a time..."" is answered by ONCE, a 4-letter entry. Used 138 times across 34 distinct years; most recently in 2026. It appears in 22 publications in the xd corpus. Every figure on this page comes from the pilot data itself.
The answer
ONCE
4 letters. See every clue for this answer on the ONCE answer page.
Used 138 times across 34 distinct years; most recently in 2026. It appears in 22 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.
- ONCEREMOVED (3 uses in xd)
Other clues for ONCE
Every other clue in this pilot answered by ONCE, most used first.
- Formerly - used 402 times, most recently in 2026
- A single time - used 296 times, most recently in 2026
- As soon as - used 137 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.
- At any time - EVER, used 696 times
- "Once ___ a time ..." - UPON, used 284 times
- High time? - NOON, used 151 times
- "The Time Machine" race - ELOI, used 148 times
- ___ time (never) - ATNO, used 137 times
- At that time - THEN, used 134 times
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