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Is LIGHTPROOF a valid Scrabble word?

Yes, LIGHTPROOF is a valid word in US Scrabble and UK Scrabble, worth 19 points.

Base score before bonus squares; blank tiles score zero.

What does LIGHTPROOF mean?

  1. adjective

    not penetrable by light

    “lightproof containers”

Definitions from WordNet 3.1, Princeton University.

Points

19

Scrabble

21

Words With Friends

10

Letters

L (1) + I (1) + G (2) + H (4) + T (1) + P (3) + R (1) + O (1) + O (1) + F (4) = 19 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 LIGHTPROOF

LIGHTPROOF 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 LIGHTPROOF

The 60 highest-scoring words using these letters.

Study LIGHTPROOF and related words

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