13-Letter Words Matching I_______R____

There are 23 13-letter words that match I_______R____. 10 are common words, such as IDIOSYNCRATIC and INAPPROPRIATE. A rarer one is ISOPROTERENOL. In this set, E is the most frequent open letter (21 words). 7 words contain a doubled letter.

Full list 23

idiosyncraticinappropriateinspectoratesintermarriageintermarryinginterspersinginterspersioninvertebratesirrecoverableirrecoverablyincendiarismsinteroperableinteroperatesisoelectronicimmunosorbentinspectorshipinterneuronalintrathoraciciontophoresesiontophoresisiontophoreticipsilaterallyisoproterenol

About this list

Words
23 (10 common words)
Common example
idiosyncratic
Rare example
isoproterenol
Doubled letters
7
Ending in S
6
Most frequent letter
E (21)

Questions

How many 13-letter words matching i_______r____ are there?

23. 10 of them are common words.

What is a common example?

IDIOSYNCRATIC is among the common words in this set.