overestimate
definition: a calculation that results in an estimate that is too high
example:
speech part: noun
synonyms:
overestimation
definition: an appraisal that is too high
example:
speech part: noun
synonyms:
overvaluation
definition: make too high an estimate of
example: We overestimated our own powers.
speech part: verb
synonyms:
overrate
definition: assign too high a value to
example:
speech part: verb
synonyms:
overvalue