sur-1

1.
a prefix meaning “over, above,” “in addition,” occurring mainly in loanwords from French and partial calques of French words:
surcharge; surname; surrender; survive.
Compare super-.
Origin
Middle English < Old French < Latin super- super-

sur-2

1.
variant of sub- before r: surrogate.
British Dictionary definitions for sur-

sur-1

prefix
1.
over; above; beyond: surcharge, surrealism Compare super-
Word Origin
from Old French, from Latin super-

sur-2

prefix
1.
a variant of sub- surrogate
Word Origin and History for sur-

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-).