There are 70 five-letter words ending in X in the Knoodle dictionary — the same accepted-guess list used by most daily word games, including Wordle. The full list is below, A–Z.
Before a final X, the most common fourth letters are E, I, A — worth remembering when the last tile is green and the middle is still open.
ADDAX
ADMIX
AFFIX
ANNEX
BEAUX
BEMIX
BOLIX
BORAX
CALIX
CALYX
CAPEX
CAREX
CHOUX
CIMEX
CODEX
COMIX
CULEX
CYLIX
DESEX
DETOX
DEWAX
EMBOX
ENFIX
FEDEX
FOREX
GALAX
HAPAX
HELIX
HYRAX
IMMIX
INBOX
INDEX
INFIX
KYLIX
LATEX
LIMAX
LINUX
LUREX
MALAX
MIREX
MUREX
PANAX
PHLOX
PODEX
PYREX
RADIX
REDOX
REDUX
REFIX
RELAX
REMEX
REMIX
RETAX
RETOX
REWAX
SALIX
SILEX
SOREX
TELEX
THANX
UNBOX
UNFIX
UNMIX
UNSEX
UNTAX
URBEX
VARIX
VIBEX
VITEX
XEROX
Stuck mid-puzzle? A quick scan of this list beats burning a guess. When you've found the word, keep the streak going.