Etymology
The noun is derived from Middle English profre (“act of offering or presenting a gift; offer of something; challenge; sacrifice; act of petitioning or requesting; petition, request; proposal, suggestion; idea, thought; attempt, effort; appearance; (law) payment to the Exchequer by a sheriff or other officer of estimated revenue due to the monarch”) [and other forms], and then:
* partly from Late Latin profrum, proferum (“payment to the Exchequer of estimated revenue due to the monarch (also puruoffrus), offer to convict a criminal”), and from its likely etymon Anglo-Norman profre, proffre, porofre (“payment to the Exchequer of estimated revenue due to the monarch; offer, proposal”), and
* partly from the verb.
The verb is derived from Late Middle English prouffer, prouffre, Middle English