Unrequited (adjective)

1. Not reciprocated or returned.
2. Not mutual or shared.

Origin:

From the latin word 'inrequisitus' meaning 'not asked for or returned'.

Examples:

1. His love for her was unrequited and she did not feel the same way.
2. The request for help was unrequited and received no response.
3. The offer of friendship was unrequited and not accepted.
4. Her efforts to make peace were unrequited and met with resistance.
5. The gift of money was unrequited and not appreciated.