15-Letter Words Matching ____O_________Y

There are 78 15-letter words that match ____O_________Y. 12 are common words, such as AUTHORITATIVELY and DISCONCERTINGLY. A rarer one is VISCOELASTICITY. In this set, I is the most frequent open letter (70 words). 43 words contain a doubled letter.

Full list 78

Common words

authoritativelydisconcertinglydiscontinuouslyintrospectivelymicroscopicallynoncontributoryphilosophicallyprepositionallyproportionalityproportionatelyradiotelegraphyretrospectively
authoritativelydisconcertinglydiscontinuouslyintrospectivelymicroscopicallynoncontributoryphilosophicallyprepositionallyproportionalityproportionatelyradiotelegraphyretrospectivelyapproachabilityastronauticallyethnocentricityethnomusicologyheliocentricityhomeopathicallyhydrometallurgyhydrostaticallymacrocosmicallymacroscopicallymicrocosmicallyneurophysiologyneuropsychiatryorthodonticallyorthopsychiatryosteopathicallypaleopsychologyphotochemicallyphotoelasticityphotometricallyphototelegraphyphototopographyphototypographypostoperativelyradiometricallyreproducibilityretrogressivelysaprophyticallysyllogisticallyuncooperativelyunprofitabilityanacoluthicallyanisotropicallyastrophysicallychemoautotrophychemotacticallycompositionallycoulometricallydorsoventralitydyslogisticallyeconometricallyeudiometricallygnotobioticallyheliometricallyhistochemicallyhistophysiologyhypnotizabilitymicromorphologymicrophotometrymicrophysicallymicroseismicitynecromanticallyneurofibrillaryneuropathicallyneuropsychologynoncontemporarypathophysiologyphonogramicallyphototacticallyphototropicallyphytochemicallyplutocraticallyradioautographyradiochemicallysocioculturallyviscoelasticity

About this list

Words
78 (12 common words)
Common example
authoritatively
Rare example
viscoelasticity
Doubled letters
43
Ending in S
0
Most frequent letter
I (70)

Questions

How many 15-letter words matching ____o_________y are there?

78. 12 of them are common words.

What is a common example?

AUTHORITATIVELY is among the common words in this set.