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Is IRRATIONAL a valid Scrabble word?

Yes, IRRATIONAL is a valid word in US Scrabble and UK Scrabble, worth 10 points.

Base score before bonus squares; blank tiles score zero.

What does IRRATIONAL mean?

  1. adjective

    not consistent with or using reason

    “irrational fears”

  2. noun

    a real number that cannot be expressed as a rational number

  3. adjective

    real but not expressible as the quotient of two integers

    “irrational numbers”

Definitions from WordNet 3.1, Princeton University.

Points

10

Scrabble

12

Words With Friends

10

Letters

I (1) + R (1) + R (1) + A (1) + T (1) + I (1) + O (1) + N (1) + A (1) + L (1) = 10 points in Scrabble.

Dictionary status

  • Scrabble (US & Canada)Valid
  • Scrabble (UK & worldwide)Valid
  • Words With FriendsListed

Scrabble lists: NWL2023 (US & Canada) and CSW24 (UK & worldwide). WWF uses our ENABLE reference plus verified additions. “Listed” and “Not listed” describe that reference; check acceptance in the game. Sources reviewed 2026-10-03.

Hooks for IRRATIONAL

Single letters that turn IRRATIONAL into another valid word in US Scrabble. Hooks let you extend a word already on the board.

Front hooks0

None — nothing can be added to the front.

Back hooks1

Words you can make from IRRATIONAL

The 60 highest-scoring words using these letters.

Study IRRATIONAL and related words

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