Cool, once
The crossword clue "Cool, once" is answered by HEP, a 3-letter entry. Used 18 times across 13 distinct years; most recently in 2025; first recorded in 1998. It appears in 8 publications in the xd corpus. Every figure on this page comes from the collection data itself, never from a guess.
The answer
HEP
3 letters. See every clue for this answer on the HEP answer page.
Used 18 times across 13 distinct years; most recently in 2025; first recorded in 1998. It appears in 8 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.
- GROOVY (1 uses in xd)
Other clues for HEP
Every other clue in this collection answered by HEP, most used first.
- With it - used 80 times, most recently in 2025
- With it, once - used 49 times, most recently in 2026
- In the know - used 26 times, most recently in 2013
- Wise to - used 16 times, most recently in 1999
- Like cool cats - used 15 times, most recently in 2025
- Like a cool cat - used 13 times, most recently in 2025
- Cool - used 11 times, most recently in 2021
- Like some cats - used 11 times, most recently in 2022
- Drill sergeant's call - used 9 times, most recently in 2000
- Not square - used 9 times, most recently in 2026
- With it, in old slang - used 9 times, most recently in 2024
- Cool, to jazzmen - used 8 times, most recently in 2026
- Informed: Slang. - used 8 times, most recently in 1977
- Kind of cat - used 8 times, most recently in 2013
- Cool, in jive talk - used 6 times, most recently in 2021
- Cool, like a cat - used 6 times, most recently in 2025
- Like jazz cats - used 6 times, most recently in 2026
- Old-school cool - used 6 times, most recently in 2026
- Wise - used 6 times, most recently in 2005
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.
- Tokyo, once - EDO, used 190 times
- Once around the track - LAP, used 177 times
- Once called - NEE, used 138 times
- "Way cool!" - RAD, used 107 times
- Once known as - NEE, used 89 times
- Once named - NEE, used 89 times
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