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Is INSIDIOUS a valid Scrabble word?

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

Base score before bonus squares; blank tiles score zero.

What does INSIDIOUS mean?

  1. adjective

    beguiling but harmful

    “insidious pleasures”

  2. adjective

    intended to entrap

  3. adjective

    working or spreading in a hidden and usually injurious way

    “glaucoma is an insidious disease”

Definitions from WordNet 3.1, Princeton University.

Points

Scrabble
10
Words With Friends
12
Letters
9

I (1) + N (1) + S (1) + I (1) + D (2) + I (1) + O (1) + U (1) + S (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 INSIDIOUS

INSIDIOUS 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 INSIDIOUS

The 60 highest-scoring words using these letters.

Study INSIDIOUS and related words

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