13-Letter Words Matching ___O______S__

There are 64 13-letter words that match ___O______S__. 18 are common words, such as ACCORDIONISTS and CHRONOLOGISTS. A rarer one is XENODIAGNOSIS. In this set, S is the most frequent open letter (60 words). 14 words contain a doubled letter.

Full list 64

Common words

accordionistschronologistscrookednessesentomologistsextortionistshomogeneouslyignominiouslyincongruouslymononucleosesmononucleosismotorcyclistsparochialisms
accordionistschronologistscrookednessesentomologistsextortionistshomogeneouslyignominiouslyincongruouslymononucleosesmononucleosismotorcyclistsparochialismsremorselesslythroatinessesunconsciousesunconsciouslyungodlinessesunsoundnessescoronavirusesaccompanyistsaeroembolismsautocatalysisautomorphismschromatolysisendometriosesendometriosisendomorphismsgyrocompasseshomomorphismsignoblenessespleomorphismstoxoplasmosisallomorphismsautocatalysesautomobilistscacophonouslychromaticismschromatolysesdemonologistsdevotednessesendocytosisesendonucleasesendosymbiosesendosymbiosishomothallismshypospadiasesmonochromistsmonomorphismsmonorchidismsmyxomatosisesongoingnessespapovavirusespyrotechnistsribonucleasesserodiagnosesserodiagnosissycophantismstheocentrismstoxoplasmosestumorigenesestumorigenesisuncouthnessesxenodiagnosesxenodiagnosis

About this list

Words
64 (18 common words)
Common example
accordionists
Rare example
xenodiagnosis
Doubled letters
14
Ending in S
58
Most frequent letter
S (60)

Questions

How many 13-letter words matching ___o______s__ are there?

64. 18 of them are common words.

What is a common example?

ACCORDIONISTS is among the common words in this set.