10-Letter Words Containing NIO

There are 23 10-letter words that contain NIO. 7 are common words, such as CALUMNIOUS and COMMUNIONS. A rarer one is UNIONISING. 1 words contain a doubled letter.

Full list 23

calumniouscommunionscompanionseuphoniousharmoniousonionskinsunionizingcraniologycraniotomyepilimniongoniometerherniotomyquaternionreunionistrutheniouscarbanionsgoniometryinterunionjunioratesmultiunionphelonionssignioriesunionising

About this list

Words
23 (7 common words)
Common example
calumnious
Rare example
unionising
Doubled letters
1
Ending in S
11

Questions

How many 10-letter words containing nio are there?

23. 7 of them are common words.

What is a common example?

CALUMNIOUS is among the common words in this set.