adjective

1. (of a word or form) denoting or referring to just one person or thing. "the third person singular form of the verb"
2. exceptionally good or great; remarkable. "he had the singular good fortune not to die in the trenches" синонимы: remarkable, extraordinary, exceptional, outstanding, striking, signal, eminent, especial, particular, notable, noteworthy, conspicuous, distinctive, impressive, rare, unique, unparalleled, unprecedented, superior, superlative, amazing, astonishing, phenomenal, astounding, sensational, spectacular, tremendous, awesome, fantastic, fabulous, terrific, stupendous, unreal
3. (of a square matrix) having a zero determinant.
4. relating to or of the nature of singularity.

noun

a singular word or form.