15-Letter Words Matching _R____O________

There are 36 15-letter words that match _R____O________. 10 are common words, such as CREDULOUSNESSES and FRACTIOUSNESSES. A rarer one is TRYPANOSOMIASES. In this set, N is the most frequent open letter (32 words). 13 words contain a doubled letter.

Full list 36

Common words

credulousnessesfractiousnessesfrivolousnessesirrationalitiestransformationstransmogrifyingtransportationstremulousnessestrigonometricaltrustworthinessarchaeopteryxeserroneousnesses
credulousnessesfractiousnessesfrivolousnessesirrationalitiestransformationstransmogrifyingtransportationstremulousnessestrigonometricaltrustworthinessarchaeopteryxeserroneousnessesornithorhynchusorthodonticallyproprioceptionstrypanosomiasisarteriographiesbronchodilatorsbronchoscopistscrashworthinesscryoprotectantserythropoietinsfractionalizinggrandiosenessesirrationalisticorthogonalitiesorthogonalizingprosopographiesprosthodontistsprotoporphyrinsprotozoologiststranspositionaltrifluoperazinetrihalomethanestroublousnessestrypanosomiases

About this list

Words
36 (10 common words)
Common example
credulousnesses
Rare example
trypanosomiases
Doubled letters
13
Ending in S
28
Most frequent letter
N (32)

Questions

How many 15-letter words matching _r____o________ are there?

36. 10 of them are common words.

What is a common example?

CREDULOUSNESSES is among the common words in this set.