Nine-letter words ending in X
19 nine-letter words end with the letter X. Here is the full list, grouped by first letter — handy when a crossword gives you the last square and nothing else.
Most common nine-letter words ending in X
Ranked by how often they appear in written English.
- multiplex
- tinderbox
- neocortex
- heterodox
- shadowbox
- executrix
- mediatrix
Highest-scoring nine-letter words ending in X
Standard Scrabble tile values, before any board multipliers.
- executrix 25
- shadowbox 25
- pepperbox 24
- flambeaux 23
- subclimax 22
- disclimax 21
- prothorax 21
- heterodox 20
- multiplex 20
- aboideaux 19
- directrix 19
- mediatrix 19
- priedieux 19
- retroflex 19
- strongbox 19
- tinderbox 19
- aboiteaux 18
- neocortex 18
- testatrix 16
All 19 nine-letter words ending in X
A 2
- aboideaux
- aboiteaux
D 2
- directrix
- disclimax
E 1
- executrix
F 1
- flambeaux
H 1
- heterodox
M 2
- mediatrix
- multiplex
N 1
- neocortex
P 3
- pepperbox
- priedieux
- prothorax
R 1
- retroflex
S 3
- shadowbox
- strongbox
- subclimax
T 2
- testatrix
- tinderbox
Do something with this list
The tools that use these words directly.
Common questions
How many nine-letter words end in X?
There are 19 nine-letter words ending in X, all listed on this page in alphabetical order.
What are the most common nine-letter words ending in X?
Ranked by how often they appear in written English, the most common are: multiplex, tinderbox, neocortex, heterodox, shadowbox, executrix, mediatrix. The full "most common" list is near the top of this page.
What is the highest-scoring nine-letter word ending in X in Scrabble?
executrix scores 25 points on plain tiles, before any double- or triple-word squares. Premium squares and the 50-point bingo bonus can change the ranking completely.
Are proper nouns and abbreviations included?
No. The list only contains words from the ENABLE lexicon, which excludes proper nouns, abbreviations and hyphenated forms — the same rule tournament Scrabble and most word games follow. Read more on the methodology page.
Counted from a 172,749-word public-domain lexicon, last reviewed 2026-08-01. How this list was built.