unfulfilled
Concise Oxford English Dictionary © 2008 Oxford University Press:
unfulfilled/ʌnfʊlˈfɪld/
▶adjective not fulfilled: an unfulfilled promise.
– derivatives
unfulfillable adjective,
unfulfilling adjective.
unfulfillable adjective,
unfulfilling adjective.
'unfulfilled' also found in these Oxford entries:

