12-Letter Words Matching O_____A_____

There are 59 12-letter words that match O_____A_____. 24 are common words, such as OBFUSCATIONS and OBJURGATIONS. A rarer one is OZONIZATIONS. In this set, I is the most frequent open letter (51 words). 15 words contain a doubled letter.

Full list 59

Common words

obfuscationsobjurgationsobscurantismobscurantistobservationsofficialdomsofficialismsorientationsoriginationsorthopaedicsorthopaedistoscillations
obfuscationsobjurgationsobscurantismobscurantistobservationsofficialdomsofficialismsorientationsoriginationsorthopaedicsorthopaedistoscillationsostentationsostentatiousosteopathiesoutbalancingoverchargingoverpraisingoverreachingoverreactingoverreactionovershadowedoxidizationsoxygenationsofficialesesofficiationsorchidaceousorientalistsorientalizedorientalizesosteomalaciaoverwearyingobscurationsoccultationsoncornavirusorientalismsosteosarcomaoutorganizedoutorganizesoutpreachingoutrivallingoveranalysesoveranalysisoveranalyzedoveranalyzesoverclaimingoverclassifyovercoachingovercrammingoverdramaticoverenamoredoverlearningoverplanningoverplantingoverreachersoverslaughedoverstaffingovertrainingozonizations

About this list

Words
59 (24 common words)
Common example
obfuscations
Rare example
ozonizations
Doubled letters
15
Ending in S
29
Most frequent letter
I (51)

Questions

How many 12-letter words matching o_____a_____ are there?

59. 24 of them are common words.

What is a common example?

OBFUSCATIONS is among the common words in this set.