Skip to content
ZWordFinderZ

12-Letter Words Ending in SIS

  • 113 words
  • All English dictionaries
  • Scrabble points
Dictionary

Popular 12-Letter Words Ending in SIS

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

All 12-Letter Words Ending in SIS 113 words

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

Our combined English word list has 113 twelve-letter words ending in SIS. They average 18.3 points, the best is ZYGAPOPHYSIS (35 points) and P is the most common first letter (16.8%).

Total words
113
Average Scrabble score
18.3
out of 35 max
Everyday words
2%
common in ordinary English
Most common first letter
P
16.8% of words

Most common first letters

  • p 16.8%
  • a 11.5%
  • h 10.6%

Top vowel pairs

  • ia10.6%
  • ae8.8%
  • io8.8%

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 twelve-letter word ending in SIS

z 10y 4g 2a 1p 3o 1p 3h 4y 4s 1i 1s 1

Z 10 + Y 4 + G 2 + A 1 + P 3 + O 1 + P 3 + H 4 + Y 4 + S 1 + I 1 + S 1 = 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).

zygapophysis

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

Explore related word lists

12-letter words ending in…

Words ending in SIS by length

Add a letter before SIS

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

Change the first letter of SIS

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

Why endings like SIS matter

12-Letter Words Ending in SIS by the numbers

12-Letter Words Ending in SIS FAQ

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

There are 113 twelve-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 twelve-letter word ending in SIS?

ZYGAPOPHYSIS is worth 35 points in Scrabble before any bonus squares. Other strong options are BILHARZIASIS (26), BILHARZIOSIS (26), HYPERKINESIS (24).

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

Everyday examples include TUBERCULOSIS, ELECTROLYSIS, MISDIAGNOSIS, OSTEOPOROSIS. Sort the list by "Most common" to see the familiar words first.

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

Uncommon but valid choices include BILHARZIOSIS (26), HYPERKINESIS (24), PARAPOPHYSIS (24), CHEMOKINESIS (23). Few players know them, so they can catch an opponent off guard.