14-Letter Words Matching _O_________A__

There are 30 14-letter words that match _O_________A__. 4 are common words, such as CONTRAINDICATE and NONCOMMERCIALS. A rarer one is NONVEGETARIANS. In this set, N is the most frequent open letter (28 words). 5 words contain a doubled letter.

Full list 30

Common words

contraindicatenoncommercialsnonparticipantnonreciprocalscoevolutionaryconsuetudinarydolichocephalynonsignificantpolyunsaturatepostcollegiateroentgenogramsroentgenograph
contraindicatenoncommercialsnonparticipantnonreciprocalscoevolutionaryconsuetudinarydolichocephalynonsignificantpolyunsaturatepostcollegiateroentgenogramsroentgenographbougainvillaeacommunitarianscontainerboardcontractionarycounterstreamscounterthreatsdocumentariansforaminiferanshomotransplantmonopropellantmonounsaturatenonbarbituratenondocumentarynonhomosexualsnonpoliticiansnonproprietarynonrecombinantnonvegetarians

About this list

Words
30 (4 common words)
Common example
contraindicate
Rare example
nonvegetarians
Doubled letters
5
Ending in S
11
Most frequent letter
N (28)

Questions

How many 14-letter words matching _o_________a__ are there?

30. 4 of them are common words.

What is a common example?

CONTRAINDICATE is among the common words in this set.