15-Letter Words With IOU
- 105 words
- All English dictionaries
- Scrabble points
Popular 15-Letter Words With IOU
The most familiar words on this list, with their Scrabble scores.
All 15-Letter Words With IOU 105 words
How often does IOU appear in fifteen-letter words?
Our combined English word list has 105 fifteen-letter words containing IOU. They average 19.8 points, the best is INEFFICACIOUSLY (28 points) and 87.6% end in S.
- Total words
- 105
- Average Scrabble score
- 19.8
- out of 28 max
- Everyday words
- 2%
- common in ordinary English
- Most common ending
- S
- 87.6% of words
Most common last letters
- s 87.6%
- y 12.4%
Top vowel pairs
- io100%
- ou100%
- ie1.9%
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 fifteen-letter word containing IOU
i 1n 1e 1f 4f 4i 1c 3a 1c 3i 1o 1u 1s 1l 1y 4
I 1 + N 1 + E 1 + F 4 + F 4 + I 1 + C 3 + A 1 + C 3 + I 1 + O 1 + U 1 + S 1 + L 1 + Y 4 = 28 points
- Double word
- 56 pts
- Triple word
- 84 pts
Face value of the tiles, then the whole word on a double- or triple-word square (letter bonuses and bingos not included).
inefficaciously
- adverbin an ineffective manner“he dealt with the problem rather ineffectively”
- Scrabble US
- Scrabble UK
- Words With Friends
Runners-up
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Words containing IOU by length
Longer sequences containing IOU
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Change the last letter of IOU
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 IOU in the middle of a word
15-Letter Words With IOU by the numbers
15-Letter Words With IOU FAQ
How many fifteen-letter words containing IOU are there?
There are 105 fifteen-letter words containing IOU 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 fifteen-letter word containing IOU?
INEFFICACIOUSLY is worth 28 points in Scrabble before any bonus squares. Other strong options are HYPERFASTIDIOUS (27), PERSPICACIOUSLY (26), CIRCUMAMBAGIOUS (26).
What are some common fifteen-letter words containing IOU?
Everyday examples include PRETENTIOUSNESS, UNCONSCIOUSNESS, CONSCIENTIOUSLY, IMPECUNIOUSNESS, INDUSTRIOUSNESS, SUPERSTITIOUSLY, SURREPTITIOUSLY, UNCEREMONIOUSLY. Sort the list by "Most common" to see the familiar words first.
Which rare fifteen-letter words containing IOU score well?
Uncommon but valid choices include INEFFICACIOUSLY (28), HYPERFASTIDIOUS (27), CIRCUMAMBAGIOUS (26), DISCOMMODIOUSLY (26). Few players know them, so they can catch an opponent off guard.