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Is ISOTONIC a valid Scrabble word?

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

Base score before bonus squares; blank tiles score zero.

What does ISOTONIC mean?

  1. adjective

    (used of solutions) having the same or equal osmotic pressure

  2. adjective

    relating to or characterized by the equal intervals of a musical scale

    “isotonic tuning”

  3. adjective

    of or involving muscular contraction in which tension is constant while length changes

  4. adjective

    of two or more muscles; having equal tension

Definitions from WordNet 3.1, Princeton University.

Points

10

Scrabble

12

Words With Friends

8

Letters

I (1) + S (1) + O (1) + T (1) + O (1) + N (1) + I (1) + C (3) = 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 ISOTONIC

ISOTONIC has no one-letter front or back hooks in US Scrabble. Adding a single letter to either end does not make another word in that list.

Front hooks0

None — nothing can be added to the front.

Back hooks0

None — nothing can be added to the end.

Anagrams of ISOTONIC

Words that use exactly the same letters.

Words you can make from ISOTONIC

The 60 highest-scoring words using these letters.

Study ISOTONIC and related words

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