a prefix meaning “over, above,” “in addition,” occurring mainly in loanwords from French and partial calques of French words: surcharge; surname; surrender; survive.
Origin of sur-1
Middle English < Old French < Latin super- super-
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Word Origin for sur-
from Old French, from Latin super-
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
word-forming element meaning "over, above, beyond, in addition," especially in words from Anglo-French and Old French, from Old French sour-, sor-, sur-, from Latin super (see super-).
Online Etymology Dictionary, © 2010 Douglas Harper