13-Letter Words Matching _R_____P_____

There are 14 13-letter words that match _R_____P_____. 4 are common words, such as FRONTISPIECES and PREOCCUPATION. A rarer one is TRIPHOSPHATES. In this set, O is the most frequent open letter (13 words). 1 words contain a doubled letter.

Full list 14

frontispiecespreoccupationprescriptionsproscriptionsarachnophobiaarchaeopteryxorthocephalicpremenopausalprescriptibleprosopopoeiasergastoplasmspropoxyphenestracheophytestriphosphates

About this list

Words
14 (4 common words)
Common example
frontispieces
Rare example
triphosphates
Doubled letters
1
Ending in S
8
Most frequent letter
O (13)

Questions

How many 13-letter words matching _r_____p_____ are there?

14. 4 of them are common words.

What is a common example?

FRONTISPIECES is among the common words in this set.