12-Letter Words Matching ___R_____R__

There are 27 12-letter words that match ___R_____R__. 6 are common words, such as HYDROSPHERES and OVERMASTERED. A rarer one is RETRANSFORMS. In this set, O is the most frequent open letter (23 words). 2 words contain a doubled letter.

Full list 27

Common words

hydrospheresovermasteredoverwinteredsmorgasbordsthermometricthoroughbredhydrochlorichydrofluoricmatrilateralmicroprogramostracodermspatrilateral
hydrospheresovermasteredoverwinteredsmorgasbordsthermometricthoroughbredhydrochlorichydrofluoricmatrilateralmicroprogramostracodermspatrilateralsupranaturalultraliberalwhortleberryandrocentriccotransportshydrosphericjourneyworksmicroamperesmicrofilariamicrospheresneurohumoraloverconcernsoverenamoredovermanneredretransforms

About this list

Words
27 (6 common words)
Common example
hydrospheres
Rare example
retransforms
Doubled letters
2
Ending in S
9
Most frequent letter
O (23)

Questions

How many 12-letter words matching ___r_____r__ are there?

27. 6 of them are common words.

What is a common example?

HYDROSPHERES is among the common words in this set.