noun
supplication
sup-lih-KAY-shun/ˌsʌplɪˈkeɪʃn/
A humble, earnest request or prayer.
She bows her head in supplication and asks for forgiveness.

Etymology
The appeasing root developed into the idea of begging humbly, and the noun ending names that act. Its use for public prayer in Latin connects this humble appeal with the selected prayer sense.
In context
in all things through prayer and supplication with Thanksgiving you will let your request be made known to God
More examples
- The prisoner sends the governor a supplication for mercy.
- Their supplications for food and shelter go unanswered.
- He kneels in quiet supplication beside his hospital bed.
Forms
supplication · supplications
supplicate verb — To ask or pray humbly and earnestly.
supplicant noun — Someone who asks humbly and earnestly.