8-Letter Words Matching I_____U_

There are 15 8-letter words that match I_____U_. 2 are common words, such as INFAMOUS and INTRIGUE. A rarer one is ISOLOGUE. In this set, N is the most frequent open letter (10 words). 3 words contain a doubled letter.

Full list 15

infamousintrigueichorousilliniumimperiumindevoutindusiuminoculumintercutidoneousilluviumimporousinconnusindiciumisologue

About this list

Words
15 (2 common words)
Common example
infamous
Rare example
isologue
Doubled letters
3
Ending in S
5
Most frequent letter
N (10)

Questions

How many 8-letter words matching i_____u_ are there?

15. 2 of them are common words.

What is a common example?

INFAMOUS is among the common words in this set.