Origin of interpleadAnglo-French entrepleder: see inter- and amp; plead
intransitive verbin·ter·plead·ed, in·ter·plead·ing, in·ter·pleads Law
Origin of interpleadMiddle English enterpleden, from Anglo-Norman enterpleder : enter-, between (from Latin inter-; see inter–) + pleder, to plead (variant of Old French plaidier; see plead).
(third-person singular simple present interpleads, present participle interpleading, simple past and past participle interpleaded or interpled)
inter- + plead