[Vocabulary] Is "Untrustworthiness" a word?

[Superpulsar]

Just a general question on whether the word "untrustworthiness" is actually a word or not as I'm getting conflicting information from different resources. MS word seems to accept it, but some dictionaries don't seem to recognize it and redirect me to "untrustworthy"

 

[Roman55]

I am not a teacher.

Yes, it is a real word.

 

[emsr2d2]

OneLook is a very good resource. You should bookmark it. As you can see from the link, 10 of the 12 dictionaries give a clear definition for "untrustworthiness". The two that don't are Dictionary.com which I have found frequently omits perfectly acceptable words and UltraLingua which doesn't look like a great resource anyway.