Unsatisfied (adjective)

1. Not satisfied or content.
2. Displeased or unhappy with something.

Origin:

From the latin word 'insatisfactus' meaning 'not satisfied or content'.

Examples:

1. The customer was unsatisfied with the service and demanded a refund.
2. The employee was unsatisfied with his job and quit to look for a better opportunity.
3. The child was unsatisfied with the toy and wanted a different one.
4. The voters were unsatisfied with the government and demanded change.
5. The audience was unsatisfied with the performance and left early.