Definitions of underrate

1. To rate under the value.

2. To rate below the value.

3. To rate too low.

4. make too low an estimate of; " he underestimated the work that went into the renovation"; " Don't underestimate the danger of such a raft trip on this river"

5. To rate too low; to undervalue.

6. A price less than the worth.

7. A price less than the value.