misvalue

from The Collaborative International Dictionary of English v.0.48

Misvalue \Mis*val"ue\, v. t.
   To value wrongly or too little; to undervalue.
   [1913 Webster]

         But for I am so young, I dread my work
         Wot be misvalued both of old and young.  --W. Browne.
   [1913 Webster]