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Is SIMPLEX a valid Scrabble word?

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

Base score before bonus squares; blank tiles score zero.

What does SIMPLEX mean?

  1. adjective

    allowing communication in only one direction at a time, or in telegraphy allowing only one message over a line at a time

    “simplex system”

  2. adjective

    having only one part or element

    “a simplex word has no affixes and is not part of a compound--like `boy' compared with `boyish' or `house' compared with `houseboat'”

Definitions from WordNet 3.1, Princeton University.

Points

18

Scrabble

21

Words With Friends

7

Letters

S (1) + I (1) + M (3) + P (3) + L (1) + E (1) + X (8) = 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 SIMPLEX

SIMPLEX 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.

Words you can make from SIMPLEX

The 60 highest-scoring words using these letters.

Study SIMPLEX and related words

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