impoison

== English == === Etymology === From Middle English impoisounen, empoisounen, from Old French empoisoner, equivalent to im- +‎ poison. === Verb === impoison (third-person singular simple present impoisons, present participle impoisoning, simple past and past participle impoisoned) Obsolete form of empoison. ==== Derived terms ==== === References === “impoison”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.