[n] a calculation that results in an estimate that is too high
[n] an appraisal that is too high
[v] make too high an estimate of; "He overestimated his own powers"
[v] assign too high a value to; "You are overestimating the value of your old car"
appraisal, approximation, estimate, estimate, estimation, estimation, idea, misjudge, overcapitalise, overcapitalize, value
\O`ver*es"ti*mate\, v. t. To estimate too highly; to overvalue.
\O`ver*es"ti*mate\, n. An estimate that is too high; as, an overestimate of the vote.