Supplicant (noun)

1. A person who makes a humble or earnest request, or prays humbly.
2. A person who seeks something from a superior, such as a favor or help.

Origin:

Derived from the latin word "supplicantem" which means "praying" or "entreating", it has been used in english since the 14th century.

Examples:

1. The supplicant knelt before the king and begged for mercy.
2. The supplicant waited patiently for her turn to speak to the judge.
3. The church was filled with supplicants seeking guidance and forgiveness.
4. The beggar was a supplicant for alms and food.
5. As a supplicant he implored the deity for blessings.