Heat source
The crossword clue "Heat source" is answered by SUN, a 3-letter entry. Used 24 times across 12 distinct years; most recently in 2026; first recorded in 2001. It appears in 7 publications in the xd corpus. Every figure on this page comes from the collection data itself.
The answer
SUN
3 letters. See every clue for this answer on the SUN answer page.
Used 24 times across 12 distinct years; most recently in 2026; first recorded in 2001. It appears in 7 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.
- BOILER (4 uses in xd)
Other clues for SUN
Every other clue in this collection answered by SUN, most used first.
- Day light - used 56 times, most recently in 2026
- Baltimore newspaper - used 34 times, most recently in 2026
- Early riser? - used 27 times, most recently in 2025
- Baltimore paper - used 22 times, most recently in 2026
- Nearest star - used 22 times, most recently in 2025
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.
- Dead heat - TIE, used 171 times
- Tofu source - SOY, used 103 times
- Metal source - ORE, used 101 times
- Bran source - OAT, used 74 times
- Shade source - ELM, used 68 times
- Maple syrup source - SAP, used 57 times
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