There are a total of 169 6-letter words containing 'ex', and the number may vary in different dictionaries. You can specify the dictionary and order.

• adnexa ₁₅
• alexia ₁₄
• alexin ₁₅
• annexe ₁₅
• apexed ₁₇
• apexes ₁₆
• auspex ₁₇
• biflex ₂₀
• caudex ₁₈
• convex ₂₁
• cortex ₁₆
• dentex ₁₅
• dexies ₁₄
• dexter ₁₄
• dextro ₁₄
• diplex ₁₈
• duplex ₁₉
• exacta ₁₆
• exacts ₁₆
• exalte ₁₄
• exalts ₁₄
• examen ₁₇
• exarch ₁₈
• exceed ₁₇
• excels ₁₇
• except ₁₉
• excess ₁₆
• excide ₁₇
• excise ₁₆
• excite ₁₆
• excuse ₁₇
• exeats ₁₃
• exedra ₁₄
• exempt ₁₉
• exequy ₂₅
• exerts ₁₃
• exeunt ₁₅
• exhale ₁₆
• exhort ₁₅
• exhume ₁₉
• exiled ₁₅
• exiles ₁₄
• exilic ₁₇
• exines ₁₄
• exists ₁₃
• exited ₁₄
• exodoi ₁₄
• exodos ₁₄
• exodus ₁₅
• exogen ₁₆
• exonic ₁₇
• exopod ₁₇
• exotic ₁₆
• expand ₁₈
• expats ₁₆
• expect ₁₉
• expels ₁₇
• expend ₁₈
• expert ₁₆
• expire ₁₆
• expiry ₁₈
• export ₁₆
• expose ₁₆
• expost ₁₆
• exsect ₁₆
• exsert ₁₃
• extant ₁₄
• extend ₁₅
• extent ₁₄
• extern ₁₄
• extoll ₁₅
• extols ₁₄
• extort ₁₃
• extras ₁₃
• exuded ₁₆
• exudes ₁₅
• exults ₁₅
• exurbs ₁₇
• exuvia ₁₈
• flexed ₁₈
• flexes ₁₇
• flexor ₁₇
• hexade ₁₆
• hexads ₁₆
• hexane ₁₆
• hexers ₁₅
• hexing ₁₈
• hexone ₁₆
• hexose ₁₅
• hexyls ₁₈
• ibexes ₁₆
• ilexes ₁₄
• lexeme ₁₇
• lexica ₁₇
• plexal ₁₈
• plexor ₁₇
• plexus ₁₈
• pollex ₁₈
• prexes ₁₆
• reflex ₁₇
• regexp ₁₈
• scolex ₁₇
• sexers ₁₃
• sexier ₁₃
• sexily ₁₆
• sexing ₁₆
• sexism ₁₆
• sexist ₁₃
• sexpot ₁₆
• sextan ₁₄
• sexted ₁₄
• sexter ₁₃
• sextet ₁₃
• sexton ₁₄
• sextos ₁₃
• sexual ₁₅
• silvex ₁₈
• texted ₁₄
• texter ₁₃
• unisex ₁₅
• unsexy ₁₇
• unvext ₁₉
• urtext ₁₄
• vertex ₁₇
• vexers ₁₇
• vexils ₁₈
• vexing ₂₀
• vortex ₁₇
• alexic ₁₅
• exiler ₁₃
• exonym ₁₈
• plexes ₁₅
• rexine ₁₃
• bembex ₁₉
• deflex ₁₇
• exacum ₁₇
• excamb ₁₉
• exeems ₁₅
• exemed ₁₆
• exemes ₁₅
• exodes ₁₄
• exodic ₁₆
• exomes ₁₅
• exomis ₁₅
• expugn ₁₆
• extasy ₁₆
• extine ₁₃
• extirp ₁₅
• extold ₁₄
• flexis ₁₆
• flexos ₁₆
• forfex ₁₉
• frutex ₁₆
• grexes ₁₄
• hexact ₁₈
• hexene ₁₆
• imbrex ₁₇
• implex ₁₇
• isolex ₁₃
• nextly ₁₆
• orexis ₁₃
• orifex ₁₆
• rhexes ₁₆
• rhexis ₁₆
• sexfid ₁₇
• suplex ₁₅
• ulexes ₁₃
• wexing ₁₇
• yexing ₁₇

There are 169 6-letter words containing ex in the well-known word game dictionary, 124 in the Scrabble US (US/Canada/Thailand - TWL/NWL) dictionary, and 163 in the Scrabble UK (International - SOWPODS/CSW) dictionary, and 128 in the Words with Friends (WWF) dictionary.