15-Letter Words Matching _________OP____

There are 16 15-letter words that match _________OP____. 1 are common words, such as PHILANTHROPISTS and COUNTERPROPOSAL. A rarer one is SPECTROSCOPISTS. 1 words contain a doubled letter.

Full list 16

philanthropistscounterproposalhexachlorophenelymphadenopathymicrosporophylloverdevelopmentphilanthropicalspectroscopicalanthroposophiesantidevelopmentbronchoscopistscorticotrophinsmegagametophytenonphilosophersphilanthropoidsspectroscopists

About this list

Words
16 (1 common words)
Common example
philanthropists
Rare example
spectroscopists
Doubled letters
1
Ending in S
7

Questions

How many 15-letter words matching _________op____ are there?

16. 1 of them are common words.

What is a common example?

PHILANTHROPISTS is among the common words in this set.