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Regex Roulette · #36 · 2026-05-10

Match words NOT ending with "ing"

Difficulty 3/3

How to play

Write a regex that matches all green strings and rejects all red strings. Live feedback shows which strings pass. Shorter patterns score better.

Must match

  • hello — not yet evaluated
  • cat — not yet evaluated
  • run — not yet evaluated
  • test — not yet evaluated

Must not match

  • running — not yet evaluated
  • coding — not yet evaluated
  • sing — not yet evaluated
  • ring — not yet evaluated

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Pattern body only — slashes and flags (e.g. /g, /i) aren't part of the input.

0/200 chars

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