Undervalue

1. n. A low rate or price; a price less than the real worth; undervaluation.
2. v. t. To value, rate, or estimate below the real worth; to depreciate.
3. v. t. To esteem lightly; to treat as of little worth; to hold in mean estimation; to despise.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.