Supplicant
WordNet
adjective
(1) Humbly entreating
"A suppliant sinner seeking forgiveness"
noun
(2) One praying humbly for something
"A suppliant for her favors"
(3) Someone who prays to God
WiktionaryText
Etymology
Latin supplicans, "supplicating, bowing down" from supplico "kneel, bow down, request", from sub- "lower" + plico "fold".