13-Letter Words Matching _______OR____

There are 75 13-letter words that match _______OR____. 21 are common words, such as BRAINSTORMING and CHLOROFORMING. A rarer one is TRANSTHORACIC. In this set, I is the most frequent open letter (63 words). 10 words contain a doubled letter.

Full list 75

Common words

brainstormingchloroformingdiscomfortingdisproportioninspectoratesnonconformingnonconformistnonconformitynonperformingnonsupportingoutperformingoverdecorated
brainstormingchloroformingdiscomfortingdisproportioninspectoratesnonconformingnonconformistnonconformitynonperformingnonsupportingoutperformingoverdecoratedoverdecoratesprehistoricalprofessorshipprotectoratesreinvigoratedreinvigoratesrutherfordiumsalutatoriansthenceforwardactinomorphicclavichordistcontemporizedcontemporizescosponsorshipcouncilorshipcounselorshipdisconformityheteromorphichypochloritesnonconformismnonhistoricalpreceptorshipprehistoriansprofessoriateprotectorshipprotochordatetheriomorphicallelomorphicbrainstormerscollectorshipcounterorderscyclosporinesflugelhornistgranodioritesgranodioritichydrothoraceshydrothoraxesimmunosorbentinspectorshipintrathoraciciontophoresesiontophoresisiontophoreticmoderatorshipneedleworkersnonconformersnonperformersnonuniformityoverinformingoverreportingprecentorshippreceptorialsprofessoratesprofessoriatspseudomorphicradiothoriumsreflectorizedreflectorizesreinvigoratorsolicitorshipspectatorshipthermoformingtransthoracic

About this list

Words
75 (21 common words)
Common example
brainstorming
Rare example
transthoracic
Doubled letters
10
Ending in S
24
Most frequent letter
I (63)

Questions

How many 13-letter words matching _______or____ are there?

75. 21 of them are common words.

What is a common example?

BRAINSTORMING is among the common words in this set.