15-Letter Words Matching _____R_A_______

There are 20 15-letter words that match _____R_A_______. 6 are common words, such as COMFORTABLENESS and CONSERVATIONISM. A rarer one is UNIVERSALNESSES. In this set, E is the most frequent open letter (19 words). 9 words contain a doubled letter.

Full list 20

comfortablenessconservationismconservationistkindergartenerspreservationistpreternaturallyconservatorshipelectroanalysispreservationismcorporealnesseselectroacousticelectroanalyseshyperreactivitymercurialnessesoverornamentingpictorialnessespostirradiationpreformationistsubterraneouslyuniversalnesses

About this list

Words
20 (6 common words)
Common example
comfortableness
Rare example
universalnesses
Doubled letters
9
Ending in S
8
Most frequent letter
E (19)

Questions

How many 15-letter words matching _____r_a_______ are there?

20. 6 of them are common words.

What is a common example?

COMFORTABLENESS is among the common words in this set.