12 Letter Words Containing IOS

There are 55+ 12 letter words with IOS in our English dictionary. Every 12-letter IOS word below is valid in the Scrabble (TWL and SOWPODS), Wordle, and Words With Friends dictionaries, sortable and ready for your next puzzle. You can also browse all words with IOS.

Popular 12-Letter Words With IOS

anaerobioses 14
anaerobiosis 14
angiostomous 15
basidiospore 17
bilharzioses 26
bilharziosis 26
biosignature 15
biosurgeries 15
biosyntheses 20
biosynthetic 22
chemiosmoses 21
cryptobiosis 21

All 12-Letter Words With IOS (28 words)

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How Common is IOS as a Middle 12 Letter word?

There are 55 12-letter words containing IOS in English. The average Scrabble score here is 17.9, with -S endings dominating (56% of them).

Total Words
55
Avg Scrabble Score
17.9
Most Common Ending (56%)
S
Top Vowel Pairs
IO
IE

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12 Letter Words with IOS are often very useful for word games like Scrabble and Words with Friends. This list will help you to find the top scoring words to beat the opponent. Word Finder by WordTips gives you a list of words ordered by their word game points of your choice. You might also be interested in 12 Letter Words starting with IOS.

Are you playing Wordle? Try our New York Times Wordle Solver or use the Include and Exclude features on our 12 Letter Words page when playing Dordle, WordGuessr or any other Wordle-like games. They help you guess the answer faster by allowing you to input the good letters you already know and exclude the words containing your bad letter combinations.

Highest-Scoring 12-Letter IOS-Words in Scrabble

bilharziosis 26
bilharzioses 26
chemiosmotic 23
biosynthetic 22
cryptobiosis 21
chemiosmoses 21

What is the highest scoring word in Scrabble that contains IOS?

26 Points

The highest scoring word in Scrabble that contains IOS is bilharziosis with a total of 26 points.

B 3
I 1
L 1
H 4
A 1
R 1
Z 10
I 1
O 1
S 1
I 1
S 1

FAQ 12 Letter Words With IOS

  • How many 12 letter words containing IOS are in the English dictionary?

    There are 55 12-letter words in the English dictionary that contain IOS. The average Scrabble score across them is 17.9.

  • Are there any rare 12 letter words containing IOS worth more in Scrabble?

    Yes. Uncommon 12-letter words like "bilharziosis", "bilharzioses", "prodigiosity", "thiosulfuric" contain IOS and can score big thanks to their unusual letters. "bilharziosis" is worth 26 points in Scrabble before any bonus tiles.

  • What are the most common 12 letter words containing IOS?

    Everyday 12-letter words containing IOS include "anaerobioses", "anaerobiosis", "angiostomous", "basidiospore", "bilharzioses".