Unrealized (adjective)

1. Not brought into actual being or existence.
2. Not attained or achieved.

Origin:

From the latin word 'inrealizatus' meaning 'not realized or accomplished'.

Examples:

1. His dream of becoming a famous musician remained unrealized.
2. The company had several unrealized projects due to lack of funding.
3. The potential of the land was unrealized due to poor management.
4. She had many unrealized aspirations and regrets in her life.
5. The invention was never put into practice and remained unrealized.