13-Letter Words Matching ______O____R_

There are 49 13-letter words that match ______O____R_. 16 are common words, such as BACKGROUNDERS and COLLABORATORS. A rarer one is TENDEROMETERS. In this set, S is the most frequent open letter (46 words). 12 words contain a doubled letter.

Full list 49

Common words

backgrounderscollaboratorscommemoratorscorroboratorscorroboratorygalvanometersimpersonatorsinterlocutorsinterlocutoryinterrogatorsinterrogatorymagnetometers
backgrounderscollaboratorscommemoratorscorroboratorscorroboratorygalvanometersimpersonatorsinterlocutorsinterlocutoryinterrogatorsinterrogatorymagnetometersquestionnaireskateboardersspectrometerstelepromptersmagnetosphereasthenospheredeclinometersdensitometerselectrometersinclinometerspsychrometerssensitometerssurrejoindersaccommodatorsanthologizerscarillonneurscodiscoverersdecarbonizerselectrotypersextemporizersextensometersextrapolatorsfractionatorsincorporatorsinterpolatorsmollycoddlersmythologizersnephelometersolfactometerspenetrometersphotopolymersreciprocatorsrespirometersskeletonizerssynchronizerstellurometerstenderometers

About this list

Words
49 (16 common words)
Common example
backgrounders
Rare example
tenderometers
Doubled letters
12
Ending in S
43
Most frequent letter
S (46)

Questions

How many 13-letter words matching ______o____r_ are there?

49. 16 of them are common words.

What is a common example?

BACKGROUNDERS is among the common words in this set.