1. not the same in quantity, size, or value
2. not having the same rights, opportunities, or treatment
3. not adequate or sufficient for a particular task

Examples

• The two pieces of cake were unequal in size.
• Women fought for equal pay because their salaries were unequal to men’s.
• The treaty created unequal terms that favored one country over another.
• She felt unequal to the challenge of leading such a large team.
• The distribution of resources was unequal across different regions.
• His skills were unequal to the demands of the advanced course.