extraordinary; remarkable; exceptional

a singular success.

unusual or strange; odd; different

singular behavior.

being the only one of its kind; distinctive; unique

a singular example.

separate; individual.

Grammar . noting or pertaining to a member of the category of number found in many languages that indicates that a word form has one referent or denotes one person, place, thing, or instance, as English boy and thing, which are singular nouns, or goes, a singular form of the verb go. Compare dual ( def. 4 ) , plural ( def. 4 ) .

Logic .

of or pertaining to something individual, specific, or not general.

(of a proposition) containing no quantifiers, as Socrates was mortal.

Mathematics .

of or pertaining to a linear transformation from a vector space to itself that is not one-to-one.

of or pertaining to a matrix having a determinant equal to zero.

Obsolete . private.

Obsolete . single.

the singular number.

a form in the singular.

adverb

exceptionally , extraordinarily , remarkably , uncommonly