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13-Letter Words Ending in SIS

  • 88 words
  • All English dictionaries
  • Scrabble points
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Popular 13-Letter Words Ending in SIS

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

All 13-Letter Words Ending in SIS 88 words

How common is SIS at the end of thirteen-letter words?

Our combined English word list has 88 thirteen-letter words ending in SIS. They average 20.3 points, the best is HETEROZYGOSIS (29 points) and H is the most common first letter (12.5%).

Total words
88
Average Scrabble score
20.3
out of 29 max
Everyday words
1%
common in ordinary English
Most common first letter
H
12.5% of words

Most common first letters

  • h 12.5%
  • m 10.2%
  • p 10.2%

Top vowel pairs

  • ia9.1%
  • io8%
  • eo4.5%

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 ending in SIS

h 4e 1t 1e 1r 1o 1z 10y 4g 2o 1s 1i 1s 1

H 4 + E 1 + T 1 + E 1 + R 1 + O 1 + Z 10 + Y 4 + G 2 + O 1 + S 1 + I 1 + S 1 = 29 points

Double word
58 pts
Triple word
87 pts

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

heterozygosis

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

  • Scrabble US
  • Scrabble UK
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13-Letter Words Ending in SIS by the numbers

13-Letter Words Ending in SIS FAQ

How many thirteen-letter words ending in SIS are there?

There are 88 thirteen-letter words ending in SIS 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 ending in SIS?

HETEROZYGOSIS is worth 29 points in Scrabble before any bonus squares. Other strong options are MYCOTOXICOSIS (29), LYMPHOCYTOSIS (28), SCHIZOGENESIS (28).

What are some common thirteen-letter words ending in SIS?

Everyday examples include METAMORPHOSIS, MONONUCLEOSIS, PSYCHOKINESIS, AMNIOCENTESIS. Sort the list by "Most common" to see the familiar words first.

Which rare thirteen-letter words ending in SIS score well?

Uncommon but valid choices include HETEROZYGOSIS (29), MYCOTOXICOSIS (29), HOMOMORPHOSIS (25), HYPERHIDROSIS (25). Few players know them, so they can catch an opponent off guard.