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15-Letter Words With ISTR

  • 32 words
  • All English dictionaries
  • Scrabble points
Dictionary

Popular 15-Letter Words With ISTR

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

All 15-Letter Words With ISTR 32 words

How often does ISTR appear in fifteen-letter words?

Our combined English word list has 32 fifteen-letter words containing ISTR. They average 22.3 points, the best is PSYCHOCHEMISTRY (35 points) and 46.9% end in S.

Total words
32
Average Scrabble score
22.3
out of 35 max
Everyday words
3%
common in ordinary English
Most common ending
S
46.9% of words

Most common last letters

  • s 46.9%
  • y 28.1%
  • n 12.5%

Top vowel pairs

  • io31.3%
  • eo6.3%
  • ie6.3%

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 ISTR

p 3s 1y 4c 3h 4o 1c 3h 4e 1m 3i 1s 1t 1r 1y 4

P 3 + S 1 + Y 4 + C 3 + H 4 + O 1 + C 3 + H 4 + E 1 + M 3 + I 1 + S 1 + T 1 + R 1 + Y 4 = 35 points

Double word
70 pts
Triple word
105 pts

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

psychochemistry

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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15-letter words containing…

Words containing ISTR by length

Longer sequences containing ISTR

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

Change the last letter of ISTR

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 ISTR in the middle of a word

15-Letter Words With ISTR by the numbers

15-Letter Words With ISTR FAQ

How many fifteen-letter words containing ISTR are there?

There are 32 fifteen-letter words containing ISTR 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 ISTR?

PSYCHOCHEMISTRY is worth 35 points in Scrabble before any bonus squares. Other strong options are THERMOCHEMISTRY (30), IMMUNOCHEMISTRY (29), BIOGEOCHEMISTRY (28).

Which rare fifteen-letter words containing ISTR score well?

Uncommon but valid choices include PSYCHOCHEMISTRY (35), CYTOCHEMISTRIES (27), QUARTERMISTRESS (26), SCHOOLMISTRESSY (25). Few players know them, so they can catch an opponent off guard.