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Is INFINITESIMAL a valid Scrabble word?

Yes, INFINITESIMAL is a valid word in US Scrabble and UK Scrabble, worth 18 points.

Base score before bonus squares; blank tiles score zero.

What does INFINITESIMAL mean?

  1. noun

    (mathematics) a variable that has zero as its limit

  2. adjective

    infinitely or immeasurably small

    “two minute whiplike threads of protoplasm”

Definitions from WordNet 3.1, Princeton University.

Points

18

Scrabble

22

Words With Friends

13

Letters

I (1) + N (1) + F (4) + I (1) + N (1) + I (1) + T (1) + E (1) + S (1) + I (1) + M (3) + A (1) + L (1) = 18 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 INFINITESIMAL

Single letters that turn INFINITESIMAL 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 INFINITESIMAL

The 60 highest-scoring words using these letters.

Study INFINITESIMAL and related words

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