Does the word 'unmirthful' exist?

Question

I first saw the word used in this story - http://gutenberg.net.au/ebooks06/0602581h.html

...But I can't find it in any dictionary.

Answer 1

unmirthful = unmindful, cheerless, unhappy

found it on: www.yourdictionary.com

The word does exist but has not been written and accepted in dictionnaries yet.

Answer 2

this is a very ungood question, but i will attempt to give you a doubleplusgood answer that isn't super-sized.

like everything else in the universe, languages are dynamic and change over time.  it's entirely possible that this word isn't in any dictionary, but if it has been used in a context that has meaning for you, then yes, the word exists.

Answer 3

The mad scientists at the dictionary factory might come after you if they find out you've been existifying words. You better watch your step, buddy!