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9-Letter Words Starting With IO

  • 17 words
  • All English dictionaries
  • Scrabble points
Dictionary

All 9-Letter Words Starting With IO 17 words

How common is IO at the start of nine-letter words?

Our combined English word list has 17 nine-letter words that start with IO. They average 13 points, the best is IONIZABLE (20 points) and 41.2% end in S.

Total words
17
Average Scrabble score
13
out of 20 max
Everyday words
0%
common in ordinary English
Most common ending
S
41.2% of words

Most common last letters

  • s 41.2%
  • e 35.3%
  • y 11.8%

Top vowel pairs

  • io100%
  • au5.9%

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 nine-letter word that starts with IO

i 1o 1n 1i 1z 10a 1b 3l 1e 1

I 1 + O 1 + N 1 + I 1 + Z 10 + A 1 + B 3 + L 1 + E 1 = 20 points

Double word
40 pts
Triple word
60 pts

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

ionizable

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

  • Scrabble US
  • Scrabble UK
  • Words With Friends

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9-letter words starting with…

abcdefghijklmnopqrstuvwxyz

Words starting with IO by length

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How to use this word list

Playing words that start with IO

9-Letter Words Starting With IO by the numbers

9-Letter Words Starting With IO FAQ

How many nine-letter words that start with IO are there?

There are 17 nine-letter words that start with IO 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 nine-letter word that starts with IO?

IONIZABLE is worth 20 points in Scrabble before any bonus squares. Other strong options are IODOFORMS (15), IODOMETRY (15), IODOPHILE (15).

Which rare nine-letter words that start with IO score well?

Uncommon but valid choices include IONIZABLE (20), IODOPHILE (15), IODOPHORS (15), IONOPHORE (14). Few players know them, so they can catch an opponent off guard.