UNDERESTIMATE
underestimate, underestimation, underrating, underreckoning
(noun) an estimation that is too low; an estimate that is less than the true or actual value
underestimate, underrate
(verb) 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”
lowball, underestimate
(verb) make a deliberately low estimate; “The construction company wanted the contract badly and lowballed”
undervalue, underestimate
(verb) assign too low a value to; “Don’t underestimate the value of this heirloom-you may sell it at a good price”
Source: WordNet® 3.1
Etymology
Verb
underestimate (third-person singular simple present underestimates, present participle underestimating, simple past and past participle underestimated)
(transitive) To perceive (someone or something) as having a lower value, quantity, worth, etc, than what he/she/it actually has.
Synonyms
• belittle
• misunderestimate
• misjudge
• make light of
Antonyms
• (to perceive as having lower value): overestimate
Noun
underestimate (plural underestimates)
An estimate that is too low.
Synonyms
• underestimation
Antonyms
• overestimate
Source: Wiktionary
Un`der*es"ti*mate, v. t.
Definition: To set to
Un`der*es"ti*mate, n.
Definition: The act of underestimating; too low an estimate.
Source: Webster’s Unabridged Dictionary 1913 Edition