14-Letter Words Matching ____OP________

There are 47 14-letter words that match ____OP________. 7 are common words, such as APPROPRIATIONS and ASTROPHYSICIST. A rarer one is SPOROPOLLENINS. In this set, T is the most frequent open letter (39 words). 12 words contain a doubled letter.

Full list 47

Common words

appropriationsastrophysicistexpropriationshippopotamuseshydroponicallymicroprocessoroveroptimisticeutrophicationhistopathologyhistoplasmosisimpropernessesmetropolitical
appropriationsastrophysicistexpropriationshippopotamuseshydroponicallymicroprocessoroveroptimisticeutrophicationhistopathologyhistoplasmosisimpropernessesmetropoliticalmicropathologyorthopedicallyphytopathologyphytoplanktonssociopoliticalsubpopulationsunpropitiouslyaminopeptidaseaminophyllinesanthophyllitescosmopolitismscycloparaffinsfiliopietistichistoplasmoseshydroperoxideshydrophilicityhydrophobicitymicroparticlesmicroplanktonsmicroprojectormicropublishermicropulsationmicropuncturesnannoplanktonsneuropathologynitroparaffinsoligopsonisticorthophosphatepaleopathologyphotoperiodismphytopathogensphytoplanktersprotoplanetaryprotoporphyrinsporopollenins

About this list

Words
47 (7 common words)
Common example
appropriations
Rare example
sporopollenins
Doubled letters
12
Ending in S
21
Most frequent letter
T (39)

Questions

How many 14-letter words matching ____op________ are there?

47. 7 of them are common words.

What is a common example?

APPROPRIATIONS is among the common words in this set.