adjective. Not recognized, as to quality or worth.

adjective. Not having risen in price or value.

Not appreciated.

adjective. not recognized as having any value

adjective. not having risen in value

adjective. not likely to be rewarded

adjective. having value that is not acknowledged

"Following the failed Bay of Pigs invasion of Cuba, Washington Post publisher Katherine Graham sympathetically told her friend Allen Dulles, the CIA Director fired by President Kennedy after the disaster, that she knew he must be feeling terribly "unappreciated"."

unacknowledged  unrewarding  

appreciated  depreciated  

nonexistent  unacknowledged  unanswered  unattempted  unavailable