misestimate
Definitions
To form an incorrect or inaccurate estimate of something.
To miscalculate the value, size, or quantity of an object or situation.
Examples
The project manager tended to misestimate the time required for complex software development tasks.
It is easy to misestimate the total cost of a renovation when unexpected structural issues arise.
Synonyms
miscalculate misjudge miscompute misappraise underrate overestimate