An additional confirmation of the etymological source of pay

Probably before 1200, paien, "to please, to satisfy, to put money down"; later, "to recompense, to requite, to appease"; borrowed from Old French paiier, from Latin pacare, "to appease, to pacify", or "to satisfy"; especially, a creditor, from pax, "peace".

The meaning in Latin of "to pacify" or "to satisfy" developed through Medieval Latin into that of "pay a creditor", and so "to pay", generally, in the Romance languages (Old French paiier, Provencal, Spanish, Portuguese pagar, Italian pagare, etc.).

In some of these languages, the verb still has both senses; but in French and in English, the sense of "to satisfy" or "to please" has become obsolete.

—Based on information from The Barnhart Dictionary of Etymology; Robert K. Barnhard, Editor; The H.W. Wilson Company; 1988; page 767.

payable

1. Requiring payment on a certain date; due date. 2. Requiring payment to a particular person or entity. 3. Subject to or requiring payment; especially, as specified: "His loan was to be payable next month." 4. Capable of producing profit: "He started a payable business venture."

payee

1. A person to whom a payment is to be made. 2. Someone to whom money is being paid or is due; especially, the person to whom a check or money order is payable.

payer (s), payers (pl) (noun forms)

1. A person who provides money or other compensation. 2. The person named in a bill or note who has to give money to the holder of the bill.

payment (s), payments (pl) (noun forms)

1. An amount of money that is paid or is due to be paid. 2. The act of paying money, or fact of being paid: "She expected the payment to be made at the end of the month." 3. A reward or punishment given in return for some kind of behavior or action.

peace

1. Freedom from war, or the time when a war or conflict ends; such as, a peace agreement. 2. A calm and quiet state, free from disturbances or noises. 3. A state of mental calm and serenity, with no anxiety. 4. Freedom from conflict or disagreement among people or groups of people. 5. A treaty agreeing to an end of hostilities between two warring parties. 6. The absence of violence or other disturbances within a state.

peaceable

1. Disposed to peace or of a peaceful nature. 2. Inclined toward peace and avoiding contentious situations. 2. Tranquil and free from strife and disorder.

peaceably

1. In a peaceable manner. 2. A reference to being peaceful and undisturbed.

peaceful

1. Not disturbed by strife or turmoil or war. 2. Quiet, calm, and tranquil; such as, a peaceful atmosphere. 3. Serene and untroubled in one's mind. 4. Inclined or disposed to peace; peaceable.

peacefully

1. In a peaceful manner: "They live peacefully with their neighbors." 2. A reference to being calm and quiet with a lack of interruption or annoyance from worry, problems, noise, or unwanted actions.

peacefulness

1. The condition in which one is calm and tranquil. 2. A situation which is inclined or disposed to peace; peaceable. 3. Of or characteristic of a condition of peace.