9-Letter Words Matching O_____O__

There are 78 9-letter words that match O_____O__. 30 are common words, such as OBJECTORS and OBLATIONS. A rarer one is OVERSTORY. In this set, R is the most frequent open letter (57 words). 21 words contain a doubled letter.

Full list 78

Common words

objectorsoblationsoblivionsobliviousobnoxiousoccasionsoffertoryofficiousoffshootsolfactoryoligopolyomissions
objectorsoblationsoblivionsobliviousobnoxiousoccasionsoffertoryofficiousoffshootsolfactoryoligopolyomissionsoperatorsorthodoxyoutermostoverblownoverbooksovercloudovercooksovercrowdoverflownoverflowsovergrownovergrowsoverlooksovershoesovershootoverstockoviparousoxymoronsoctachordoleaceousophiologyorthiconsostensoryosteologyosteotomeosteotomyostracodsovenproofovercropsoverproudoverscoreoverwroteovulatoryoxygenousobsessorsobviatorsoctoploidoctoroonsoctothorpoestriolsoperagoerophiuroidorrisrootostracodeoutbloomsoutechoedoutechoesoutercoatouthumorsoutsavorsoutscoopsoutshootsoutstrodeoutthrobsoutthrownoutthrowsoverblowsoverbroadovercoolsoverdroveoveremoteoverplotsoverproofovershotsoversmokeoverstory

About this list

Words
78 (30 common words)
Common example
objectors
Rare example
overstory
Doubled letters
21
Ending in S
39
Most frequent letter
R (57)

Questions

How many 9-letter words matching o_____o__ are there?

78. 30 of them are common words.

What is a common example?

OBJECTORS is among the common words in this set.