Definitions for unsungʌnˈsʌŋ
Random House Webster's College Dictionary
not sung; not uttered or rendered by singing.
not celebrated in song or verse; not praised.
Origin of unsung:
obscure, unknown, unsung(adj)
not famous or acclaimed
"an obscure family"; "unsung heroes of the war"
unappreciated, unsung, unvalued(adj)
having value that is not acknowledged
Which has not been lauded or appreciated.
The backstage crew of the movie were the unsung heroes.
The third hymn remained unsung.