12-Letter Words Matching ________NA__

There are 64 12-letter words that match ________NA__. 22 are common words, such as AFFECTIONATE and CONCERTINAED. A rarer one is TRANSAMINASE. In this set, I is the most frequent open letter (53 words). 10 words contain a doubled letter.

Full list 64

Common words

affectionateconcertinaedconditionalsdecaffeinatedeflationarydisciplinarydiscriminatediversionaryeleemosynaryelocutionaryevolutionaryexpansionary
affectionateconcertinaedconditionalsdecaffeinatedeflationarydisciplinarydiscriminatediversionaryeleemosynaryelocutionaryevolutionaryexpansionaryextortionateindoctrinateinflationarynoncriminalsnonmalignantpredesignateprobationaryrecessionalsrecessionarytercentenarydiscriminantaccretionaryappassionatocarrageenanscompanionateconglutinatedisciplinantexclusionaryexsanguinateextortionaryharlequinadeincoordinatemisdemeanantpermanganatepredestinatereflationaryreversionarysecretionarysexcentenarysubalternatesubdiaconatetraditionarytrichomonadsvaletudinarywhatshernamewhatshisnameabolitionarycotyledonarydechlorinateenterokinasenonnationalsoverdominantpantothenatepostcoronarypremalignantprevisionaryprovisionalsprovisionarypseudomonadsrepristinatesemidominanttransaminase

About this list

Words
64 (22 common words)
Common example
affectionate
Rare example
transaminase
Doubled letters
10
Ending in S
8
Most frequent letter
I (53)

Questions

How many 12-letter words matching ________na__ are there?

64. 22 of them are common words.

What is a common example?

AFFECTIONATE is among the common words in this set.