impledge

From im- +‎ pledge.

impledge (third-person singular simple present impledges, present participle impledging, simple past and past participle impledged)

1. (archaic) To pledge.
   • 1815, Walter Scott, Lord of the Isles, Canto I:

     Think'st thou, amid this ample round,
     A single brow but thine has frown'd,
     To sadden this auspicious morn,
     That bids the daughter of high Lorn
     Impledge her spousal faith to wed
     The Heir of mighty Somerled;

• “impledge”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.