from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. To reckon below what is right or proper; to underrate.
from the GNU version of the Collaborative International Dictionary of English
- transitive v. To reckon below what is right or proper; to underrate.
from The Century Dictionary and Cyclopedia
- To reckon or calculate too low; underrate.
under- + reckon (Wiktionary)