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Origin
unsure
English
sure
English
sure
Middle English (1100-1500)
sur
Middle French (ca. 1400-1600)
seür
Old French (842-ca. 1400)
securus
Latin
sur
Old French (842-ca. 1400)
un-
English
on-
Middle English (1100-1500)
on-
Old English (ca. 450-1100)
ond-
Old English (ca. 450-1100)
un-
Middle English (1100-1500)
un-
Old English (ca. 450-1100)
unus
Latin
oinos
Latin
Sourced from
Etym
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