There are a total of 177 10-letter words containing 'inter', and the number may vary in different dictionaries. You can specify the dictionary and order.

• appointers ₁₇
• aquatinter ₂₁
• bioprinter ₁₇
• cointerred ₁₅
• hinterland ₁₆
• imprinters ₁₇
• interabang ₁₇
• interacted ₁₅
• interbasin ₁₅
• interbreed ₁₅
• intercaste ₁₄
• interceded ₁₆
• interceder ₁₅
• intercedes ₁₅
• intercepts ₁₇
• interchain ₁₇
• interclass ₁₅
• intercools ₁₅
• intercrops ₁₇
• intercross ₁₄
• interdicts ₁₅
• interested ₁₂
• interfaced ₁₈
• interfaces ₁₇
• interfaith ₁₆
• interfered ₁₅
• interferer ₁₄
• interferes ₁₄
• interferon ₁₅
• interfiber ₁₇
• interfiled ₁₆
• interfiles ₁₅
• interflows ₁₈
• interfluve ₂₀
• interfolds ₁₆
• interfused ₁₆
• interfuses ₁₅
• intergrade ₁₄
• intergraft ₁₆
• intergroup ₁₇
• intergrown ₁₇
• intergrows ₁₆
• interionic ₁₅
• interiorly ₁₄
• interjects ₂₃
• interknits ₁₆
• interlaced ₁₆
• interlaces ₁₅
• interlards ₁₃
• interlayer ₁₄
• interleave ₁₆
• interlends ₁₄
• interlined ₁₄
• interliner ₁₃
• interlines ₁₃
• interlinks ₁₇
• interlocal ₁₆
• interlocks ₁₉
• interloped ₁₆
• interloper ₁₅
• interlopes ₁₅
• interludes ₁₄
• interlunar ₁₄
• intermarry ₁₆
• intermedia ₁₅
• intermedin ₁₆
• interments ₁₅
• intermezzi ₃₂
• intermezzo ₃₂
• intermixed ₂₂
• intermixes ₂₁
• intermodal ₁₆
• intermural ₁₆
• internally ₁₆
• internauts ₁₃
• internists ₁₂
• internment ₁₆
• internodal ₁₄
• internodes ₁₃
• internship ₁₇
• interocean ₁₅
• interorgan ₁₄
• interparty ₁₆
• interphase ₁₆
• interplant ₁₆
• interplays ₁₇
• interplead ₁₆
• interpoint ₁₅
• interpoles ₁₅
• interposed ₁₅
• interposer ₁₄
• interposes ₁₄
• interprets ₁₄
• interreges ₁₃
• interregna ₁₄
• interrenal ₁₃
• interrogee ₁₃
• interrupts ₁₅
• intersects ₁₄
• intersexes ₁₈
• interspace ₁₇
• interstage ₁₃
• interstate ₁₁
• interstice ₁₄
• intertidal ₁₃
• intertills ₁₃
• intertrack ₁₈
• intertrial ₁₂
• intertrigo ₁₃
• intertroop ₁₄
• intertwine ₁₅
• intertwist ₁₄
• interunion ₁₄
• interurban ₁₆
• intervales ₁₆
• intervened ₁₇
• intervener ₁₆
• intervenes ₁₆
• intervenor ₁₆
• interviews ₁₈
• interweave ₁₈
• interwinds ₁₆
• interworks ₁₈
• interwound ₁₇
• interwoven ₁₉
• interzonal ₂₂
• midwinters ₁₈
• overwinter ₁₈
• printeries ₁₄
• reinterred ₁₂
• reprinters ₁₄
• splintered ₁₆
• uninterest ₁₃
• winteriest ₁₄
• winterised ₁₅
• winterises ₁₄
• winterized ₂₄
• winterizes ₂₃
• winterkill ₂₀
• winterless ₁₅
• wintertide ₁₅
• wintertime ₁₇
• interjoins ₁₇
• interknots ₁₄
• interloans ₁₀
• interloops ₁₂
• winterfeed ₁₇
• calcsinter ₁₄
• interbrain ₁₂
• intercalar ₁₂
• interclude ₁₃
• interdeals ₁₁
• interdealt ₁₁
• interdined ₁₂
• interdines ₁₁
• interessed ₁₁
• interesses ₁₀
• interluded ₁₂
• intermured ₁₃
• intermures ₁₂
• interpaged ₁₄
• interpages ₁₃
• interphone ₁₅
• interpolar ₁₂
• interponed ₁₃
• interpones ₁₂
• interposal ₁₂
• interradii ₁₁
• interrails ₁₀
• interramal ₁₂
• interregal ₁₁
• interserts ₁₀
• intertexts ₁₇
• interveins ₁₃
• intervital ₁₃
• intervolve ₁₆
• interzones ₁₉

There are 177 10-letter words containing inter in the well-known word game dictionary, 135 in the Scrabble US (US/Canada/Thailand - TWL/NWL) dictionary, and 171 in the Scrabble UK (International - SOWPODS/CSW) dictionary, and 142 in the Words with Friends (WWF) dictionary.