superior; exceptional
a person of singular attainments
very unusual or strange; peculiar
a day of singular events
single or unique
of a separate person or thing; individual
said of a word or word form: denoting one person, thing, or instance: compare dual1 (2), plural1 (1)
said of a mathematical matrix: having a determinant equal to zero
not general
a singular proposition in logic
singularly adv
[Middle English singuler via Old French from Latin singularis, from singulus only one]