9-Letter Words Starting With ON

There are 18 9-letter words that start with ON. 8 are common words, such as ONCOGENES and ONENESSES. A rarer one is ONTICALLY. 4 words contain a doubled letter.

Full list 18

oncogenesonenessesonerouslyonionskinonlookersonlookingonrushingonslaughtonanisticoncogeniconcologicondometeronomasticontogeniconcidiumsoncomingsondogramsontically

About this list

Words
18 (8 common words)
Common example
oncogenes
Rare example
ontically
Doubled letters
4
Ending in S
6

Questions

How many 9-letter words starting with on are there?

18. 8 of them are common words.

What is a common example?

ONCOGENES is among the common words in this set.