9-Letter Words Matching O_N______

There are 12 9-letter words that match O_N______. 8 are common words, such as OBNOXIOUS and OENOPHILE. A rarer one is OSNABURGS. In this set, I is the most frequent open letter (10 words). 0 words contain a doubled letter.

Full list 12

obnoxiousoenophileointmentsomnibusesomnivoresornamentsorneriestownershipomnirangeornithineomniarchsosnaburgs

About this list

Words
12 (8 common words)
Common example
obnoxious
Rare example
osnaburgs
Doubled letters
0
Ending in S
7
Most frequent letter
I (10)

Questions

How many 9-letter words matching o_n______ are there?

12. 8 of them are common words.

What is a common example?

OBNOXIOUS is among the common words in this set.