verb (past and past participleun·der·es·ti·mat·ed, present participleun·der·es·ti·mat·ing, 3rd person present singularun·der·es·ti·mates)
Definition:
1. transitive and intransitive verb make too low estimate: to make an estimate of something that is too low We underestimated the time it would take.
2. transitive verb misjudge worth of somebody or something: to judge people or things as being inferior to their real value or ability Don't underestimate her - she's tougher than she looks.
noun (pluralun·der·es·ti·mates)
Definition:
too low estimate: an estimate that is too low, or a judgment that is too unfavorable to somebody or something