Origin: 1150–1200; ME
payen < OF
paier < ML
pācāre to satisfy, settle (a debt), L: to pacify (by force of arms).
See peace 
Synonyms:
1. discharge, liquidate. 3. reward, reimburse, indemnify. 19. remuneration, emolument, fee, honorarium, income, allowance. Pay, wage or wages, salary, stipend are terms for amounts of money or equivalent benefits, usually given at a regular rate or at regular intervals, in return for services. Pay is the general term: His pay went up every year. Wage usually designates the pay given at an hourly, daily, or weekly rate, often for manual or semiskilled work; wages usually means the cumulative amount paid at regular intervals for such work: an hourly wage; weekly wages. Salary designates a fixed, periodic payment for regular work or services, usually computed on a monthly or yearly basis: an annual salary paid in twelve equal monthly installments. Stipend designates a periodic payment, either as a professional salary or, more commonly, as a salary in return for special services or as a grant in support of creative or scholarly work: an annual stipend for work as a consultant; a stipend to cover living expenses.