13-Letter Words Matching ________O__R_

There are 41 13-letter words that match ________O__R_. 15 are common words, such as COMMISSIONERS and CONCESSIONARY. A rarer one is WATERPROOFERS. In this set, E is the most frequent open letter (35 words). 13 words contain a doubled letter.

Full list 41

Common words

commissionersconcessionaryconfectionersconfectionerydiscretionaryexpeditionaryflamethrowersgeostationarynondisclosurepractitionersprecautionaryrevolutionary
commissionersconcessionaryconfectionersconfectionerydiscretionaryexpeditionaryflamethrowersgeostationarynondisclosurepractitionersprecautionaryrevolutionaryschussboomerssharpshootersunderexposureconcessionersconcretionaryconfectionarycuckooflowersdevolutionaryexhibitionersillocutionaryinvolutionarypasqueflowersstormtrooperssubventionarytransitionaryconclusionaryconvulsionarycounterpowersdiastereomersdigressionaryflameproofersforeshadowershomeschoolersnincompooperynonstationaryredemptionersstereoisomerssubversionarywaterproofers

About this list

Words
41 (15 common words)
Common example
commissioners
Rare example
waterproofers
Doubled letters
13
Ending in S
19
Most frequent letter
E (35)

Questions

How many 13-letter words matching ________o__r_ are there?

41. 15 of them are common words.

What is a common example?

COMMISSIONERS is among the common words in this set.