13-Letter Words Matching _OS__________

There are 60 13-letter words that match _OS__________. 14 are common words, such as COSIGNATORIES and COSMETOLOGIES. A rarer one is POSTVASECTOMY. In this set, T is the most frequent open letter (50 words). 15 words contain a doubled letter.

Full list 60

Common words

cosignatoriescosmetologiescosmetologistcosmopolitansfossilizationhospitalitieshospitalizingnostalgicallypossibilitiespostgraduatespostmodernismpostmodernist
cosignatoriescosmetologiescosmetologistcosmopolitansfossilizationhospitalitieshospitalizingnostalgicallypossibilitiespostgraduatespostmodernismpostmodernistpostoperativepostponementscosmochemicalcosmographerscosmographiescosponsorshipcostermongersfossiliferouspostclassicalpostdoctoratepostmenstrualpostmodernitypostpubescentcosmeticizingcosmochemistscosmopolitismcostivenessescosurfactantseosinophiliasgossipmongershospitalisinglosablenessesnosologicallypossessednesspostbourgeoispostcraniallypostdebutantepostdiluvianspostembryonalpostembryonicpostemergencepostemergencypostepilepticpostfracturespostholocaustpostinauguralpostinfectionpostinjectionpostisolationpostlapsarianpostpositionspostrecessionpostsecondaryposttensionedposttraumaticposttreatmentpostulationalpostvasectomy

About this list

Words
60 (14 common words)
Common example
cosignatories
Rare example
postvasectomy
Doubled letters
15
Ending in S
22
Most frequent letter
T (50)

Questions

How many 13-letter words matching _os__________ are there?

60. 14 of them are common words.

What is a common example?

COSIGNATORIES is among the common words in this set.