1. lacking enthusiasm, drive, or desire to do something
2. done without a clear reason or purpose

Examples

• The student seemed unmotivated and rarely completed assignments on time.
• After losing his job, he felt unmotivated to look for new opportunities.
• Her unmotivated behavior in class concerned her teachers.
• The attack appeared to be completely unmotivated.
• The committee criticized the unmotivated changes to the policy.
• He gave an unmotivated excuse for missing the meeting.