14-Letter Words Matching ________OP____

There are 19 14-letter words that match ________OP____. 3 are common words, such as ACETAMINOPHENS and ARCHBISHOPRICS. A rarer one is THIGMOTROPISMS. In this set, T is the most frequent open letter (16 words). 1 words contain a doubled letter.

Full list 19

acetaminophensarchbishopricsmisanthropistscardiomyopathyencephalopathymegasporophyllmisanthropicalnondevelopmentfluoroscopistsgastroscopistsgonadotrophinsheterotrophieslaparoscopistspredevelopmentsomatotrophinssporangiophoresubdevelopmentthermotropismsthigmotropisms

About this list

Words
19 (3 common words)
Common example
acetaminophens
Rare example
thigmotropisms
Doubled letters
1
Ending in S
11
Most frequent letter
T (16)

Questions

How many 14-letter words matching ________op____ are there?

19. 3 of them are common words.

What is a common example?

ACETAMINOPHENS is among the common words in this set.