Un′der‐work″ (?), v. t. [imp. & p. p.Underworked (?) or Underwrought (�); p. pr. & vb. n.Underworking.] 1. To injure by working secretly; to destroy or overthrow by clandestine measure; to undermine.
But thou from loving England art so far,
That thou hast underwrought his lawful king. Shak.
2. To expend too little work upon; as, to underwork a painting. Dryden.
3. To do like work at a less price than; as, one mason may underwork another.