transitive verb
to appraise at too low a quantity, rate, strength, value, or the like.
The press underestimated the boxer’s endurance and wrongly predicted the outcome of the fight.
The building collapsed because the weight of the roof was underestimated.
Don’t underestimate yourself; you are smart enough and qualified enough to do this job.
The government underestimated both the extent of the damage and the cost of the repairs.
noun
an appraisal that is too low.