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Definition of underestimate

underestimate

/ˌʌndərˈɛstəˌmeɪt/
un · der · es · ti · mate

Plural:underestimates
•
Past Simple:underestimated
•
Past Participle:underestimated
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Present Participle:underestimating
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underestimate Lexical Profile

underestimate Game Scores & Validity

• verb

1

To regard someone or something as less capable, important, or serious than they actually are.

Example

"Do not underestimate her determination to complete the research project ahead of schedule."


2

To estimate something to be smaller, cheaper, or less numerous than it really is.

Example

"The organizers underestimated the number of attendees and quickly ran out of seating in the auditorium."

Synonyms
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Antonyms
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• noun

1

An estimate, calculation, or judgment that is lower or less significant than the actual amount, value, or extent.

Example

"The initial budget proved to be a serious underestimate once the unexpected construction delays were factored in."

Synonyms
View all synonyms for underestimate
Antonyms
View all antonyms for underestimate

Word Nuance & Usage

As a heteronym, 'underestimate' is pronounced with a long 'a' sound (/eɪt/) at the end when used as a verb, and with an unstressed schwa (/ət/) when used as a noun.

• Rhymes for underestimate

Word Origin & Etymology

Formed in the early 19th century from the Old English prefix 'under-' and 'estimate', which derives from the Latin 'aestimatus', the past participle of 'aestimare' (to value or appraise).

Cite this Entry


Wordmom. (2026). Definition of Underestimate. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/underestimate
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