15-Letter Words Matching __________O__N_

There are 12 15-letter words that match __________O__N_. 6 are common words, such as BURGLARPROOFING and DECOMMISSIONING. A rarer one is SUCCINYLCHOLINE. 6 words contain a doubled letter.

Full list 12

burglarproofingdecommissioningpreconditioningrecommissioningtroubleshootingweatherproofingsuperheterodynevespertilionineanticarcinogensencephalitogensprecipitinogenssuccinylcholine

About this list

Words
12 (6 common words)
Common example
burglarproofing
Rare example
succinylcholine
Doubled letters
6
Ending in S
3

Questions

How many 15-letter words matching __________o__n_ are there?

12. 6 of them are common words.

What is a common example?

BURGLARPROOFING is among the common words in this set.