UnscramblerHQ
Menu

01 Word definition

insidious

9 letters · 5 vowels · 4 consonants

Is INSIDIOUS a word?

Yes. INSIDIOUS is a 9-letter adjective. beguiling but harmful Check the official dictionary for your particular word game before playing it.

Correct spelling

How do you spell INSIDIOUS?

I-N-S-I-D-I-O-U-S

INSIDIOUS contains 9 letters, begins with I, and ends with S.

Check another spelling →

Meaning and definition

1adjective

  1. beguiling but harmful

    “insidious pleasures”

2adjective

  1. working or spreading in a hidden and usually injurious way

    “glaucoma is an insidious disease”
Synonyms
pernicioussubtle
Source: Open English WordNet 2025 (CC BY 4.0) ↗
Scrabble score10points
Words With Friends12points
Word length9letters

02 Letter breakdown

How is INSIDIOUS spelled?

I1N2S3I4D5I6O7U8S9
Starts withINSFirst 3 letters
Ends withOUSLast 3 letters
Unique letters6Repeats I, S
Vowel balance5 / 4Vowels / consonants
Popular spelling questions →9-letter words →Words starting with INS →Words ending in OUS →Words made from INSIDIOUS →Words with D →Words with I →Words with N →Words with O →

03 Word-game status

Can you play INSIDIOUS?

Listed

UnscramblerHQ dictionary

This spelling is present in our broad English solver dictionary.

Check

Scrabble

Base tile value: 10 points. Confirm eligibility in the official word list used for your region and edition.

Check

Words With Friends

Base tile value: 12 points. Confirm eligibility inside the current game dictionary.

04 Related words

More words to explore.

invidious13 ptsincurious11 ptsindubious12 ptsinebrious11 ptsingenious10 ptsinjurious16 ptsinnoxious16 ptsingenuous10 ptsinnocuous11 ptsinodorous10 ptsintroitus9 ptsincisions11 pts

FAQ Quick answers

About INSIDIOUS.

How do you spell INSIDIOUS?

INSIDIOUS is spelled I-N-S-I-D-I-O-U-S. It contains 9 letters.