The Collaborative International Dictionary of English v.0.48:

Disvalue \Dis*val"ue\ (?; see Dis-), v. t.
   To undervalue; to depreciate. --Shak.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Disvalue \Dis*val"ue\, n.
   Disesteem; disregard. --B. Jonson.
   [1913 Webster]