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Is UNSTABLE a valid Scrabble word?

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

Base score before bonus squares; blank tiles score zero.

What does UNSTABLE mean?

  1. adjective

    lacking stability or fixity or firmness

    “unstable political conditions”

  2. adjective

    highly or violently reactive

    “sensitive and highly unstable compounds”

  3. adjective

    affording no ease or reassurance

    “a precarious truce”

  4. adjective

    suffering from severe mental illness

    “of unsound mind”

Definitions from WordNet 3.1, Princeton University.

Points

10

Scrabble

14

Words With Friends

8

Letters

U (1) + N (1) + S (1) + T (1) + A (1) + B (3) + L (1) + E (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 UNSTABLE

Single letters that turn UNSTABLE 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

Anagrams of UNSTABLE

Words that use exactly the same letters.

Words you can make from UNSTABLE

The 60 highest-scoring words using these letters.

Study UNSTABLE and related words

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