12-Letter Words Matching ____I______R

There are 28 12-letter words that match ____I______R. 8 are common words, such as AMPHITHEATER and CALLIGRAPHER. A rarer one is RESPIROMETER. 8 words contain a doubled letter.

Full list 28

Common words

amphitheatercalligraphercommissionerdissimulatorparticipatorrefrigeratorstraightenerunfriendliercommiseratordeclinometerdensitometergesticulator
amphitheatercalligraphercommissionerdissimulatorparticipatorrefrigeratorstraightenerunfriendliercommiseratordeclinometerdensitometergesticulatorgossipmongerhandicrafterinclinometermultiangularmultinuclearpontificatorprecipitatorproliferatorscarificatorsensitometerturbidimeterveggieburgeracclimatizerfestivalgoermyofibrillarrespirometer

About this list

Words
28 (8 common words)
Common example
amphitheater
Rare example
respirometer
Doubled letters
8
Ending in S
0

Questions

How many 12-letter words matching ____i______r are there?

28. 8 of them are common words.

What is a common example?

AMPHITHEATER is among the common words in this set.