15-Letter Words Matching ___________R_A_

There are 20 15-letter words that match ___________R_A_. 3 are common words, such as ENTREPRENEURIAL and PARLIAMENTARIAN. A rarer one is SEMITERRESTRIAL. In this set, I is the most frequent open letter (20 words). 4 words contain a doubled letter.

Full list 20

entrepreneurialparliamentarianphantasmagoriasimprovisatorialintrapreneuriallactovegetariannecessaritarianantiegalitarianantilibertariancorynebacterialenterobacterialhemoglobinuriasnonprofessorialnontotalitarianorganomercurialphenylthioureasplatitudinarianpostmillenarianpsychohistoriansemiterrestrial

About this list

Words
20 (3 common words)
Common example
entrepreneurial
Rare example
semiterrestrial
Doubled letters
4
Ending in S
3
Most frequent letter
I (20)

Questions

How many 15-letter words matching ___________r_a_ are there?

20. 3 of them are common words.

What is a common example?

ENTREPRENEURIAL is among the common words in this set.