Unfulfilled (adjective)

1. Not having achieved or realized one's ambitions, hopes, or expectations.
2. Not completed or carried out successfully.

Origin:

Late 17th century: from un- (expressing negation) + fulfilled.

Examples:

1. She felt unfulfilled in her career.
2. His unfulfilled dreams weighed heavy on his mind.
3. The unfulfilled contract caused a dispute.
4. Her unfulfilled promise made her unreliable.
5. His unfulfilled goals left him feeling unsatisfied.