10-Letter Words Matching I_______U_

There are 17 10-letter words that match I_______U_. 12 are common words, such as IDOLATROUS and IMPERVIOUS. A rarer one is INTERGROUP. In this set, O is the most frequent open letter (15 words). 2 words contain a doubled letter.

Full list 17

idolatrousimperviousimprimaturimpromptusincautiousincestuousindecorousindigenousinfectiousingloriousiniquitousinsightfulinvolucrumiridaceousisochroousinnumerousintergroup

About this list

Words
17 (12 common words)
Common example
idolatrous
Rare example
intergroup
Doubled letters
2
Ending in S
13
Most frequent letter
O (15)

Questions

How many 10-letter words matching i_______u_ are there?

17. 12 of them are common words.

What is a common example?

IDOLATROUS is among the common words in this set.