the GNU version of the Collaborative International Dictionary of English
v. To prize excessively; to overvalue.
The Century Dictionary and Cyclopedia
To value or prize at too high a rate.
To surpass in value.
Word Usage
"But take heed withal, lest that whilst thou dust settle thy contentment in things present, thou grow in time so to overprize them, as that the want of them (whensoever it shall so fall out) should be a trouble and a vexation unto thee."