15-Letter Words Matching ________OR_____

There are 29 15-letter words that match ________OR_____. 7 are common words, such as AMBASSADORSHIPS and CHANCELLORSHIPS. A rarer one is TRANSISTORISING. In this set, I is the most frequent open letter (27 words). 7 words contain a doubled letter.

Full list 29

Common words

ambassadorshipschancellorshipsharpsichordistsproprietorshipsreincorporatingreincorporationtransistorizinghexylresorcinolinquisitoriallyinstructorshipsnitrochloroformperfunctoriness
ambassadorshipschancellorshipsharpsichordistsproprietorshipsreincorporatingreincorporationtransistorizinghexylresorcinolinquisitoriallyinstructorshipsnitrochloroformperfunctorinessproprietoriallycombinatoriallycouncillorshipsdephosphorylateenantiomorphismenantiomorphouslegislatorshipsmegacorporationoverelaboratingoverelaborationoverglamorizingoverproportionspseudoscorpionssubcategorizingsuperabsorbentssupermajoritiestransistorising

About this list

Words
29 (7 common words)
Common example
ambassadorships
Rare example
transistorising
Doubled letters
7
Ending in S
13
Most frequent letter
I (27)

Questions

How many 15-letter words matching ________or_____ are there?

29. 7 of them are common words.

What is a common example?

AMBASSADORSHIPS is among the common words in this set.