12-Letter Words Matching O________O__

There are 37 12-letter words that match O________O__. 17 are common words, such as OBFUSCATIONS and OBJURGATIONS. A rarer one is OZONIZATIONS. In this set, S is the most frequent open letter (33 words). 7 words contain a doubled letter.

Full list 37

Common words

obfuscationsobjurgationsobservationsobstreperousobstructionsofficialdomsorientationsoriginationsoscillationsoscilloscopeostentationsostentatious
obfuscationsobjurgationsobservationsobstreperousobstructionsofficialdomsorientationsoriginationsoscillationsoscilloscopeostentationsostentatiousovercautiousoverdevelopsovergenerousoxidizationsoxygenationsofficiationsonomasiologyoophorectomyorchidaceousorchidectomyorthopterousorthotropousoverdesirousobliteratorsobscurationsoccultationsoleoresinousoligophagousorthopteroidosteosarcomaovercautionsovercontrolsoverwithholdovipositionsozonizations

About this list

Words
37 (17 common words)
Common example
obfuscations
Rare example
ozonizations
Doubled letters
7
Ending in S
30
Most frequent letter
S (33)

Questions

How many 12-letter words matching o________o__ are there?

37. 17 of them are common words.

What is a common example?

OBFUSCATIONS is among the common words in this set.