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13-Letter Words Starting With IO

  • 3 words
  • All English dictionaries
  • Scrabble points
Dictionary

All 13-Letter Words Starting With IO 3 words

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

Our combined English word list has 3 thirteen-letter words that start with IO. They average 18.7 points and the best is IONTOPHORETIC (20 points).

Total words
3
Average Scrabble score
18.7
out of 20 max
Everyday words
0%
common in ordinary English
Most common ending
S
66.7% of words

Most common last letters

  • s 66.7%
  • c 33.3%

Top vowel pairs

  • io100%

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 thirteen-letter word that starts with IO

i 1o 1n 1t 1o 1p 3h 4o 1r 1e 1t 1i 1c 3

I 1 + O 1 + N 1 + T 1 + O 1 + P 3 + H 4 + O 1 + R 1 + E 1 + T 1 + I 1 + C 3 = 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).

iontophoretic

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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Words starting with IO by length

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Playing words that start with IO

13-Letter Words Starting With IO by the numbers

13-Letter Words Starting With IO FAQ

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

There are 3 thirteen-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 thirteen-letter word that starts with IO?

IONTOPHORETIC is worth 20 points in Scrabble before any bonus squares. Other strong options are IONTOPHORESES (18), IONTOPHORESIS (18).

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

Uncommon but valid choices include IONTOPHORETIC (20), IONTOPHORESES (18), IONTOPHORESIS (18). Few players know them, so they can catch an opponent off guard.