think it's less than it really is

underestimate

verb|/ˌʌn.dɚˈɛs.tɪ.meɪt/

To judge something as less important or smaller than it actually is

Examples

In a meeting

We underestimated how long the migration would take.

Over coffee

Don't underestimate how much food teenagers can eat.

Why this word

misjudge

Underestimate specifically means judging something as less than it actually is, while misjudge is general error in judgment in any direction

miscalculate

Underestimate emphasizes thinking something is smaller, weaker, or less important than reality, while miscalculate focuses more on numerical or planning errors

undervalue

Underestimate applies to any quality like size, difficulty, or importance, while undervalue specifically refers to worth or price

Usage tip

Use when someone has misjudged or not given enough credit to something

Etymology

English under- 'below' + estimate from Latin aestimare 'to value'

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