Definition of "forethink"

forethink

verb
third-person singular simple present forethinks, present participle forethinking, simple past and past participle forethought
1. (transitive, rare) To plan (something) in advance; think, consider, or contrive beforehand; prognosticate.
  Quotations
  O vain sorceress , that could be wary to avoid the punishment of Saul ; careless to avoid the judgment of God ! Could we forethink what our sin would cost us , we durst not but be innocent
  1612–1626, [Joseph Hall], “(please specify the page)”, in [Contemplations vpon the Principall Passages of the Holy Storie], volumes (please specify |volume=II, V, or VI), London
2. (transitive, rare) To think about beforehand; to anticipate.
  Quotations
  […] and the soul of every man / Prophetically doth forethink thy fall.
  c. 1597 (date written), William Shakespeare, “The First Part of Henry the Fourth, […]”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, [Act III, scene ii]
  Let not thy divining heart / Forethinke me any ill [...].
  1635, John Donne, Song