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12-Letter Words With IOS

  • 54 words
  • All English dictionaries
  • Scrabble points
Dictionary

Popular 12-Letter Words With IOS

The most familiar words on this list, with their Scrabble scores.

All 12-Letter Words With IOS 54 words

How often does IOS appear in twelve-letter words?

Our combined English word list has 54 twelve-letter words containing IOS. They average 17.9 points, the best is BILHARZIOSES (26 points) and 59.3% end in S.

Total words
54
Average Scrabble score
17.9
out of 26 max
Everyday words
2%
common in ordinary English
Most common ending
S
59.3% of words

Most common last letters

  • s 59.3%
  • e 16.7%
  • y 7.4%

Top vowel pairs

  • io100%
  • ie13%
  • ae7.4%

Share of words where these two vowels sit side by side.

Rare words worth knowing

Valid in this dictionary but rarely seen in everyday English.

Highest-scoring twelve-letter word containing IOS

b 3i 1l 1h 4a 1r 1z 10i 1o 1s 1e 1s 1

B 3 + I 1 + L 1 + H 4 + A 1 + R 1 + Z 10 + I 1 + O 1 + S 1 + E 1 + S 1 = 26 points

Double word
52 pts
Triple word
78 pts

Face value of the tiles, then the whole word on a double- or triple-word square (letter bonuses and bingos not included).

bilharzioses

No dictionary definition on file. This is a valid game word that standard dictionaries rarely cover.

  • Scrabble US
  • Scrabble UK
  • Words With Friends

Runners-up

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12-letter words containing…

Words containing IOS by length

Longer sequences containing IOS

Each link adds one letter and keeps only combinations that have words.

Change the last letter of IOS

Trending word lists

Five-letter lists built from the letters of yesterday's Wordle answer. The set changes every day.

How to use this word list

Using IOS in the middle of a word

12-Letter Words With IOS by the numbers

12-Letter Words With IOS FAQ

How many twelve-letter words containing IOS are there?

There are 54 twelve-letter words containing IOS in our combined English word list. Other dictionaries give different totals, so switch dictionary at the top of the list to compare.

What is the highest-scoring twelve-letter word containing IOS?

BILHARZIOSES is worth 26 points in Scrabble before any bonus squares. Other strong options are BILHARZIOSIS (26), CHEMIOSMOTIC (23), BIOSYNTHETIC (22).

Which rare twelve-letter words containing IOS score well?

Uncommon but valid choices include BILHARZIOSES (26), BILHARZIOSIS (26), CHEMIOSMOTIC (23), CHEMIOSMOSES (21). Few players know them, so they can catch an opponent off guard.