Whistle blower
The crossword clue "Whistle blower" is answered by REF, a 3-letter entry. Used 67 times across 28 distinct years; most recently in 2026; first recorded in 1968. It appears in 15 publications in the xd corpus. Every figure on this page comes from the collection data itself.
The answer
REF
3 letters. See every clue for this answer on the REF answer page.
Used 67 times across 28 distinct years; most recently in 2026; first recorded in 1968. It appears in 15 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 collection link to their own answer page.
- TOOTER (8 uses in xd)
- REFEREE (7 uses in xd)
Other clues for REF
Every other clue in this collection answered by REF, most used first.
- Ump - used 75 times, most recently in 2026
- Game caller - used 65 times, most recently in 2026
- Game official - used 52 times, most recently in 2026
- NFL official - used 44 times, most recently in 2026
- NBA official - used 43 times, most recently in 2026
- Field worker - used 30 times, most recently in 2026
- TKO caller - used 28 times, most recently in 2020
- Foul caller - used 27 times, most recently in 2026
- Ump's kin - used 26 times, most recently in 2016
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.
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