Definition of "underestimate" in English

verb

1. (transitive) To estimate too low; to perceive (someone or something) as having a lower value, quantity, worth, etc., than what he/she/it actually has.

2. (transitive) To perceive or expect (someone or something) to be less significant or difficult than it actually is.

   • I totally underestimated the task.

noun

1. An estimate that is too low.