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Adjective: supplicatory  'sú-plu-ku,to-ree [N. Amer], ,sú-pli'key-tu-ree or sú-pli-ku-tree [Brit]
  1. Humbly entreating
    "a supplicatory sinner seeking forgiveness";
    - suppliant, supplicant

See also: beseeching, imploring, pleading