singular

/ˈsiŋ-gyə-lər/

Middle English singuler, from Anglo-French, from Latin singularis, from singulus only one

adjective

of or relating to a separate person or thing : individual
of, relating to, or being a word form denoting one person, thing, or instance
of or relating to a single instance or to something considered by itself

a singular noun

strange singular unique peculiar eccentric erratic odd quaint outlandish mean departing from what is ordinary, usual, or to be expected. strange stresses unfamiliarity and may apply to the foreign, the unnatural, the unaccountable. singular suggests individuality or puzzling strangeness.

noun

the singular number, the inflectional form denoting it, or a word in that form
a singular term

noun

singularity