13-Letter Words Starting With ON

There are 12 13-letter words that start with ON. 3 are common words, such as ONEROUSNESSES and ONOMATOPOEIAS. A rarer one is ONYCHOPHORANS. In this set, O is the most frequent open letter (12 words). 5 words contain a doubled letter.

Full list 12

onerousnessesonomatopoeiasonomatopoeticontogenicallyontologicallyoneiromanciesongoingnessesonomasticallyonomasticiansonomatologiesonomatologistonychophorans

About this list

Words
12 (3 common words)
Common example
onerousnesses
Rare example
onychophorans
Doubled letters
5
Ending in S
7
Most frequent letter
O (12)

Questions

How many 13-letter words starting with on are there?

12. 3 of them are common words.

What is a common example?

ONEROUSNESSES is among the common words in this set.