Undervalue /(?)/

Un·der·val·ue

Undervalue

v. t.
  1. To value, rate, or estimate below the real worth; to depreciate.
  2. To esteem lightly; to treat as of little worth; to hold in mean estimation; to despise.
    In comparison of it I undervalued all ensigns of authority.
    I write not this with the least intention to undervalue the other parts of poetry.

Undervalue

n.
  1. A low rate or price; a price less than the real worth; undervaluation.