prayer

The English word prayer goes back to Latin precaria and the verb precari, "to ask earnestly, entreat, pray." In Roman usage, this family of words belonged to requests, petitions, and verbal appeals. It did not first mean silent inward reflection. It meant words directed outward with need in them.

By late Latin and early Christian usage, precaria and related forms took on a stronger religious sense. The language of petition to gods became the language of petition to God. In Gaul, spoken Latin developed into Old French forms such as preiere and priere by about the 11th century. Those forms kept both the act of praying and the text of a prayer.

English borrowed the word from Anglo-French and Old French after the Norman Conquest of 1066. Middle English shows forms such as preiere, preyer, and prayer from the 12th and 13th centuries. The new word lived beside native English pray and older Germanic ways of naming worship. Its French form won out in the noun.

Over time, prayer widened from a spoken plea to a broad religious act that could be spoken, sung, or silent. It also kept legal and formal shades of meaning, as in older phrases like "I pray you" and "prayer for relief." The history is steady and plain: asking became worship without losing the sense of asking. A prayer is still, at root, an addressed appeal.