15-Letter Words Matching ____OR_________

There are 38 15-letter words that match ____OR_________. 10 are common words, such as AIRWORTHINESSES and AUTHORITATIVELY. A rarer one is UNIFORMITARIANS. 12 words contain a doubled letter.

Full list 38

Common words

airworthinessesauthoritativelycomfortablenesselaboratenesseshistoriographerproportionalityproportionatelyseaworthinessestemporarinessesunsportsmanlikecontortionisticforeordinations
airworthinessesauthoritativelycomfortablenesselaboratenesseshistoriographerproportionalityproportionatelyseaworthinessestemporarinessesunsportsmanlikecontortionisticforeordinationsgeomorphologieshistoriographicincoordinationsinexorabilitieschemoreceptionsclamorousnessescorporealnessesgeomorphologistglamorousnessesmicroradiographmiscorrelationsnoncorrelationsoverorchestrateoverornamentingoxidoreductasesphotoreceptionsphotoreductionspictorialnessespreformationistproportionatingrechoreographedretroreflectionretroreflectiveretroreflectorsunchoreographeduniformitarians

About this list

Words
38 (10 common words)
Common example
airworthinesses
Rare example
uniformitarians
Doubled letters
12
Ending in S
21

Questions

How many 15-letter words matching ____or_________ are there?

38. 10 of them are common words.

What is a common example?

AIRWORTHINESSES is among the common words in this set.