Billion-year period

The answer

EON

3 letters. See every clue for this answer on the EON answer page.

Used 30 times across 11 distinct years; most recently in 2026. It appears in 10 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.

• AEON (2 uses in xd)

Other clues for EON

Every other clue in this collection answered by EON, most used first.

• Long, long time - used 302 times, most recently in 2026
• Very long time - used 212 times, most recently in 2026
• A billion years - used 178 times, most recently in 2026
• Long stretch - used 50 times, most recently in 2026
• Extremely long time - used 49 times, most recently in 2026
• Eternity - used 41 times, most recently in 2025
• One billion years - used 39 times, most recently in 2026
• Many, many years - used 38 times, most recently in 2026
• Long period of time - used 34 times, most recently in 2026
• Many, many moons - used 33 times, most recently in 2026
• Near-eternity - used 32 times, most recently in 2025
• Seeming eternity - used 31 times, most recently in 2026

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.

• Historical period - ERA, used 383 times
• Historic period - ERA, used 277 times
• Vietnamese New Year - TET, used 183 times
• Notable period - ERA, used 145 times
• Memorable period - ERA, used 93 times
• Period of history - ERA, used 91 times

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