There are a total of 434 8-letter words ending in 'on', and the number may vary in different dictionaries. You can specify the dictionary and order.
- ablation 13
- ablution 14
- abortion 12
- abrasion 12
- abutilon 14
- acromion 15
- adaption 13
- addition 11
- adhesion 12
- adnation 11
- adoption 13
- advowson 17
- aeration 9
- affusion 16
- agnation 12
- allusion 12
- alluvion 16
- ambition 15
- antiphon 15
- aphelion 15
- audition 11
- aversion 13
- aviation 13
- avoision 13
- avulsion 15
- babymoon 20
- betatron 12
- bevatron 16
- biathlon 15
- bigaroon 14
- bludgeon 17
- bosthoon 14
- bouillon 15
- bourgeon 15
- cabochon 20
- calutron 14
- cannelon 15
- cardamon 16
- carillon 14
- cauldron 15
- cavesson 16
- cephalon 18
- chaldron 16
- chamfron 20
- champion 20
- chanfron 18
- chaperon 17
- cheveron 18
- chrismon 17
- cinnamon 17
- citation 12
- coaction 15
- coercion 15
- cohesion 14
- colophon 18
- conation 13
- coolamon 16
- cooption 15
- copatron 15
- cotillon 14
- crampoon 18
- creation 12
- cryotron 14
- curation 13
- decision 13
- decurion 14
- delation 11
- deletion 11
- delusion 12
- demotion 13
- deration 10
- derision 10
- deuteron 11
- devotion 14
- diapason 13
- diazinon 20
- dihedron 13
- dilation 11
- dilution 12
- diluvion 16
- diobolon 14
- dipteron 13
- disunion 12
- division 14
- dominion 14
- donation 11
- dotation 10
- doubloon 15
- duathlon 14
- duration 11
- dynatron 13
- eclosion 13
- ectozoon 21
- eduction 14
- effusion 16
- egestion 11
- ejection 21
- election 13
- electron 13
- emblazon 25
- emersion 12
- emission 12
- emoticon 15
- empoison 15
- emulsion 14
- enaction 13
- enneagon 13
- entozoon 19
- envision 14
- epimeron 15
- epyllion 16
- equation 19
- erection 12
- erigeron 11
- eruption 13
- erythron 13
- eschaton 14
- estragon 11
- ethephon 16
- eudaemon 14
- eulachon 16
- evection 16
- eversion 13
- eviction 16
- evulsion 15
- exaction 19
- excision 19
- exertion 16
- falchion 18
- fanfaron 16
- fenthion 15
- fetation 12
- fixation 19
- flatiron 13
- flection 16
- flexagon 22
- forenoon 13
- fraction 15
- friction 15
- fruition 13
- fullmoon 18
- function 17
- gambeson 17
- ganglion 15
- garrison 11
- gelation 12
- glamazon 24
- glucagon 18
- gnathion 14
- gombroon 17
- gonfalon 16
- gonfanon 16
- grandson 13
- graviton 15
- gridiron 12
- gueridon 13
- gumption 18
- gyration 13
- halation 12
- heptagon 16
- hereupon 15
- himation 14
- hypopyon 21
- hysteron 13
- ideation 10
- ignition 12
- ignitron 12
- illation 11
- illusion 12
- imprison 15
- inaction 13
- incision 13
- infixion 20
- infusion 14
- inhesion 12
- invasion 14
- iodation 10
- irenicon 13
- isochron 14
- jettison 18
- junction 23
- kakiemon 20
- kenotron 14
- klystron 16
- lavation 14
- laxation 17
- legation 12
- lenition 11
- lewisson 13
- libation 13
- ligation 12
- lobation 13
- location 13
- locution 14
- longeron 13
- lunation 12
- luncheon 17
- luxation 18
- macaroon 15
- magneton 15
- marathon 14
- martagon 14
- mastodon 13
- melodeon 14
- melodion 14
- mesotron 12
- metazoon 21
- methadon 15
- mezereon 21
- minimoon 16
- mirliton 13
- misunion 14
- monition 13
- moufflon 20
- multiton 14
- munition 14
- mutation 13
- myrmidon 18
- napoleon 14
- natation 10
- negation 12
- negatron 12
- neuraxon 18
- nidation 11
- nivation 14
- nolition 11
- nonunion 13
- notation 10
- noumenon 15
- novation 14
- nutation 11
- oblation 13
- oblivion 17
- occasion 15
- octaroon 12
- octoroon 12
- omission 12
- orthicon 14
- ostracon 12
- ostrakon 13
- oversoon 13
- oxyanion 19
- oxymoron 21
- pantheon 15
- papillon 17
- parergon 14
- pauldron 15
- pavilion 17
- pavillon 18
- pentagon 15
- petition 12
- picaroon 15
- plankton 18
- plastron 13
- plectron 16
- pleuston 14
- pliotron 13
- poltroon 13
- position 12
- positron 12
- potation 12
- preunion 14
- propylon 18
- proteron 12
- prounion 14
- puncheon 19
- punition 14
- pupation 16
- quadroon 20
- quarrion 19
- question 19
- reaction 12
- rebutton 13
- recision 12
- relation 10
- religion 12
- remotion 12
- replicon 16
- reseason 9
- resummon 16
- revision 13
- rigadoon 12
- rigaudon 13
- rogation 11
- rotation 9
- salpicon 16
- sanction 13
- scallion 14
- scansion 13
- scission 12
- scorpion 15
- scullion 15
- sedation 10
- sedition 10
- shalloon 13
- simoleon 13
- skeleton 14
- skillion 15
- smidgeon 15
- smilodon 14
- solation 10
- solution 11
- sorption 12
- southron 12
- spittoon 12
- sponsion 13
- spontoon 13
- squadron 20
- stallion 11
- stasimon 12
- stegodon 12
- sternson 10
- stiction 12
- sturgeon 12
- subtaxon 20
- sudation 11
- swaption 15
- tarragon 11
- taxation 16
- teaspoon 12
- telethon 12
- tetragon 11
- thermion 14
- traction 12
- trahison 11
- trillion 11
- trudgeon 13
- trunnion 12
- unbutton 15
- uncommon 20
- unperson 14
- unreason 11
- vacation 16
- venation 14
- vexation 20
- vigneron 16
- vocation 16
- volition 14
- volution 15
- whoreson 14
- wobbegon 20
- zonation 19
- archaeon 13
- eudaimon 11
- flaperon 13
- paleocon 12
- semillon 10
- stillson 8
- tevatron 11
- agraphon 14
- allerion 8
- analogon 9
- annexion 15
- antimuon 10
- bibation 12
- bursicon 12
- cameleon 12
- chaffron 19
- chawdron 17
- cibation 12
- ciclaton 12
- digitron 10
- ducatoon 11
- emiction 12
- empatron 12
- encomion 12
- endozoon 18
- epiploon 12
- episemon 12
- etherion 11
- eucaryon 13
- eukaryon 15
- fauchion 16
- frontoon 11
- gambroon 13
- gohonzon 21
- grillion 9
- gumphion 16
- hapteron 13
- haqueton 20
- herisson 11
- histrion 11
- hurcheon 16
- illision 8
- inustion 8
- irrision 8
- isodicon 11
- isodomon 11
- jobation 17
- limation 10
- mascaron 12
- matfelon 13
- nodation 9
- nudation 9
- nuncheon 13
- oerlikon 12
- oophoron 13
- orillion 8
- oulachon 13
- pacation 12
- pancheon 15
- panchion 15
- pantalon 10
- parazoon 19
- phlegmon 16
- pimenton 12
- polyaxon 20
- polyphon 18
- polyzoon 22
- pouldron 11
- pression 10
- prosopon 12
- putcheon 15
- refusion 11
- scholion 13
- scoinson 10
- scontion 10
- shagroon 12
- skiatron 12
- spadroon 11
- squarson 17
- stellion 8
- stillion 8
- syndeton 12
- taileron 8
- teletron 8
- tenoroon 8
- tetraxon 15
- unpoison 10
- unprison 10
- unseason 8
- unweapon 13
- vocalion 13
- warrison 11
There are 434 8-letter words ending in on in the well-known word game dictionary, 324 in the Scrabble US (US/Canada/Thailand - TWL/NWL) dictionary, and 422 in the Scrabble UK (International - SOWPODS/CSW) dictionary, and 342 in the Words with Friends (WWF) dictionary.
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