overestimate
UK: ˌəʊvərˈestɪmeɪt | US: ˌoʊvərˈestɪmeɪt
vt. to estimate something as being greater than it actually is
n. an estimate that exceeds the true value
The word combines "over," from Old English "ofer" (meaning "above" or "beyond"), with "estimate," derived from Latin "aestimare" (to assess or value). The prefix "over-" intensifies the root, implying an assessment that exceeds reasonable limits. This logical pairing reflects the concept of exaggerated judgment, a common theme in both literal and figurative usage.
Investors often overestimate short-term gains and underestimate risks.
Her overestimate of the project's budget led to financial strain.
Don't overestimate your opponent's weaknesses in a debate.
The contractor's overestimate delayed the approval process.
His overestimate of his own abilities resulted in repeated failures.