verb (used with object), un·der·es·ti·mat·ed, un·der·es·ti·mat·ing.
- to estimate at too low a value, rate, or the like.
verb (used without object), un·der·es·ti·mat·ed, un·der·es·ti·mat·ing.
- to make an estimate lower than that which would be correct.
- an estimate that is too low.
- to make too low an estimate ofhe underestimated the cost
- to think insufficiently highly ofto underestimate a person
- too low an estimate
v.1812, “to estimate at too low an amount,” from under + estimate (v.). Meaning “to rank too low, undervalue” is recorded from 1850. Related: Underestimated; underestimating.