13-Letter Words Matching _____O_____N_

There are 72 13-letter words that match _____O_____N_. 20 are common words, such as AMELIORATIONS and ANTICOAGULANT. A rarer one is UNENCOURAGING. In this set, I is the most frequent open letter (56 words). 15 words contain a doubled letter.

Full list 72

Common words

ameliorationsanticoagulantchloroformingcontrovertingecholocationsequivocationsfluorocarbonshelicopteringinvigorationsirresolutionsmisquotationsoverconfident
ameliorationsanticoagulantchloroformingcontrovertingecholocationsequivocationsfluorocarbonshelicopteringinvigorationsirresolutionsmisquotationsoverconfidentrapprochementreallocationsreappointmentredecorationsreinforcementrenegotiatingsoliloquizingtelecommutingbamboozlementchlorobenzenegonadotropinsgriseofulvinshymenopteranslepidopteransomnicompetentphylloquinonepreadolescentreimpositionsrhombohedronsthermosettingautorotationsbutyrophenonechlorohydrinschloropicrinsconglobationsequiponderantfellmongeringfictioneeringfluoroscopingheterokaryonshomologationshymenopteronsimmunosorbentlabanotationsmisprogramingonychophoransoverborrowingoverconsumingoverfocussingovergoverningplastocyaninsplastoquinonepogonophoranspostpositionspreprocessingpreprogramingproteoglycansreafforestingsoliloquisingsomatostatinssomatotropinsstereopticonsstratovolcanosubadolescentthermoelementthermoformingthermostatingtrichopteranstrichotheceneunencouraging

About this list

Words
72 (20 common words)
Common example
ameliorations
Rare example
unencouraging
Doubled letters
15
Ending in S
32
Most frequent letter
I (56)

Questions

How many 13-letter words matching _____o_____n_ are there?

72. 20 of them are common words.

What is a common example?

AMELIORATIONS is among the common words in this set.