13-Letter Words Matching ________O__N_

There are 45 13-letter words that match ________O__N_. 18 are common words, such as CHILDPROOFING and COMMISSIONING. A rarer one is WATERFLOODING. In this set, I is the most frequent open letter (43 words). 15 words contain a doubled letter.

Full list 45

Common words

childproofingcommissioningflameproofingforeshadowinghallucinogenshomeschoolingmisdiagnosingovershadowingprocessioningproportioningsharpshootingsoundproofing
childproofingcommissioningflameproofingforeshadowinghallucinogenshomeschoolingmisdiagnosingovershadowingprocessioningproportioningsharpshootingsoundproofingsuperimposingtransitioningunderexposingundershootingunquestioningwaterproofingacetylcholineagglutinogensgonadotropinsrepositioningantiestrogensbuttonhookingcocarcinogenscountermovingcounterposingfluoroscopingherringboningmiscaptioningmiscatalogingmisdevelopingonychophoransoverborrowingoverpromotingphagocytosingpogonophoransprecautioningpreportioningpretensioningsomatotropinstetrodotoxinstriamcinoloneunforthcomingwaterflooding

About this list

Words
45 (18 common words)
Common example
childproofing
Rare example
waterflooding
Doubled letters
15
Ending in S
9
Most frequent letter
I (43)

Questions

How many 13-letter words matching ________o__n_ are there?

45. 18 of them are common words.

What is a common example?

CHILDPROOFING is among the common words in this set.