8-Letter Words Matching I_____O_

There are 42 8-letter words that match I_____O_. 18 are common words, such as IGNITION and ILLUSION. A rarer one is ISOCHRON. In this set, N is the most frequent open letter (33 words). 5 words contain a doubled letter.

Full list 42

Common words

ignitionillusionimitatorimpastosimpostorimprisoninactionincisioninferiorinfernosinfusioninjector
ignitionillusionimitatorimpastosimpostorimprisoninactionincisioninferiorinfernosinfusioninjectorintercominteriorinvasioninventorinvestorironwooditeratorideationignitronillationindictorinductorinflatorinhesioninositolintradosisolatoridolatorimpactorimpellorinceptorindentorindorsorinfectorinfixioninterrowinvertoriodationiodophorisochron

About this list

Words
42 (18 common words)
Common example
ignition
Rare example
isochron
Doubled letters
5
Ending in S
3
Most frequent letter
N (33)

Questions

How many 8-letter words matching i_____o_ are there?

42. 18 of them are common words.

What is a common example?

IGNITION is among the common words in this set.