The Science of Letter Frequency in English

May 15, 2026·6 min read
The Science of Letter Frequency in English — PuzzleDaily

If you've ever wondered why certain letters feel like safe bets in word games, the answer is letter frequency — the measurable rate at which each letter appears in written English.

The famous order

Analysed across large bodies of text, English letters rank roughly E, T, A, O, I, N, S, H, R, D, L, U, and so on. The top handful appear many times more often than the rare tail of J, Q, X and Z.

Why it matters for puzzles

Guessing a common letter gives you information whether it's present or absent — both outcomes rule out a large chunk of the dictionary. Rare letters only help on the rare day the answer contains them.

  • Most common: E, T, A, O, I, N
  • Common consonants: S, H, R, D, L
  • Rare: J, Q, X, Z — test these last

Frequency in five-letter words

The order shifts slightly for five-letter answers specifically, where S, R and L climb because of common endings and clusters. That's why strong openers like SLATE and CRANE feel so reliable.

You don't need to memorise the table — just lean toward common letters early and save the rare ones for when the clues demand them.

Put it into practice

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