9-letter words ending in X

An X ending is scarce among nine-letter words: only 44 match, compared with 16,180 that end in S. None qualifies as common by the site’s frequency measure, though 34 entries have definitions. The examples range from familiar compounds such as LETTERBOX and TINDERBOX to technical terms such as DIRECTRIX.

Nine-letter X endings at a glance

• The list contains 44 nine-letter words ending in X.
• POMPHOLYX is the top scorer at 28 points.
• MONKEYPOX follows at 27 points; EXECUTRIX and SHADOWBOX each score 25.
• Collins includes 43 entries, NWL2023 includes 29, and ENABLE includes 19.

How rare are 9-letter words ending in X?

Only 44 nine-letter words end in X, making this one of the smallest groups among the listed final letters. The contrast with S is striking: 16,180 nine-letter words end in S. X is a narrow clue, not a broad word-family pattern.

The X-ending totals differ across dictionaries: 43 entries appear in Collins, 29 in NWL2023, and 19 in ENABLE. Those counts overlap, so they do not add up to the 44-word total. A word accepted in one game may not appear in another game’s list.

Which X-ending words score the most?

POMPHOLYX leads at 28 points, one point ahead of MONKEYPOX. EXECUTRIX and SHADOWBOX each score 25, while PEPPERBOX and TUCKERBOX each score 24. POMPHOLYX is an unusual specialist term, unlike familiar box compounds elsewhere in the list.

Many examples cluster around recognisable endings: LETTERBOX, GOGGLEBOX, and STRONGBOX share the box pattern; MULTIPLEX and METROPLEX share plex. Those familiar shapes sit beside specialist words such as PROTHORAX and BISECTRIX. The set’s first letters vary: P and S lead with seven words each, while D has five and M has four. All 44 share the same final X.