cleric

Cleric comes from Latin clericus, taken from Greek klerikos. Behind both lies Greek kleros, a word meaning a lot, allotment, or inherited share. In the early church, this image of an allotted share was applied to those set apart for sacred duty. A person became the portion assigned to God's service.

By the third and fourth centuries, Greek and Latin Christian texts used klerikos and clericus for members of the clergy. The word marked rank inside a church that was becoming more ordered after Constantine in the fourth century. It distinguished ordained or church-attached persons from the laity. The old language of allotment became institutional language.

Old French preserved the form as clerc, which English borrowed early as clerk. For centuries clerk could mean a literate person, a scholar, or a churchman, because clerics dominated writing and record-keeping. The more specialized form cleric developed later in English to restore the religious sense with less ambiguity. One branch went to office work; the other stayed with the altar.

Modern English cleric now means a member of the clergy or an ordained religious official. It is narrower than clerk and more explicitly ecclesiastical. Yet the hidden root still matters. A cleric is, by the word's oldest logic, someone set apart by allotment.