14-Letter Words Matching ____O______A__

There are 30 14-letter words that match ____O______A__. 6 are common words, such as AUTHORITARIANS and DISCOMBOBULATE. A rarer one is RADIOAUTOGRAPH. In this set, T is the most frequent open letter (26 words). 3 words contain a doubled letter.

Full list 30

Common words

authoritariansdiscombobulatenoncommercialspetrochemicalsphenobarbitalsradiotelegraphcoevolutionarymicrobarographpentobarbitalsperlocutionaryphotoduplicatephototelegraph
authoritariansdiscombobulatenoncommercialspetrochemicalsphenobarbitalsradiotelegraphcoevolutionarymicrobarographpentobarbitalsperlocutionaryphotoduplicatephototelegraphradiobroadcasttriiodomethaneaminopeptidasefibrosarcomatageopoliticianslignosulfonatemacroaggregatemethoxyfluraneneurochemicalsneurofibromatanondocumentarynonhomosexualsnonpoliticiansorthophosphateosteosarcomataoxidoreductaseprotoplanetaryradioautograph

About this list

Words
30 (6 common words)
Common example
authoritarians
Rare example
radioautograph
Doubled letters
3
Ending in S
9
Most frequent letter
T (26)

Questions

How many 14-letter words matching ____o______a__ are there?

30. 6 of them are common words.

What is a common example?

AUTHORITARIANS is among the common words in this set.