unappreciation
noun
un·ap·pre·ci·a·tion ˌən-ə-ˌprē-shē-ˈā-shən 
: failure to appreciate something
Word History
First Known Use
1886, in the meaning defined above
unappreciation
noun
as in inappreciativeness
Synonyms & Similar Words
Relevance
- inappreciativeness
- ingratitude
- thanklessness
- ungratefulness
Antonyms & Near Antonyms
- thanks
- gratitude
- appreciation
- appreciativeness
- thankfulness
- gratefulness