15-Letter Words Matching __ON___________

There are 12 15-letter words that match __ON___________. 1 are common words, such as WRONGHEADEDNESS and ECONOMETRICIANS. A rarer one is SPONTANEOUSNESS. 5 words contain a doubled letter.

Full list 12

wrongheadednesseconometricianspronunciamentosanonymousnessesbronchodilatorsbronchoscopistschondrocraniumseconometricallyphonocardiogramphonogramicallypronunciationalspontaneousness

About this list

Words
12 (1 common words)
Common example
wrongheadedness
Rare example
spontaneousness
Doubled letters
5
Ending in S
8

Questions

How many 15-letter words matching __on___________ are there?

12. 1 of them are common words.

What is a common example?

WRONGHEADEDNESS is among the common words in this set.