:to estimate or value (someone or something) too highly
- … the senator had been so responsible about his potential tax liabilities that he had substantially overestimated what he owed the government.
- —David Burnham
- … our habit of overestimating our knowledge and underestimating our ignorance …
- —David A. Shaywitz
- The emotional power of this reunion can't be overestimated.
- —Joe Klein
- "I mean that I am afraid I overestimated him. I don't think that he is a painter of the first rank."
- —Henry James