Singular

einzeln

(being only one of larger population)

einzigartig

(being the only one of a kind)

einzigartig

(distinguished by superiority)

singularisch

(grammar: referring to only one thing)

singulär

(linear algebra: of matrix: having no inverse)

ungewöhnlich

(being out of the ordinary)

Einzahl

(grammar: form of a word that refers to only one thing)

Singular

(grammar: form of a word that refers to only one thing)

Singularis

(grammar: form of a word that refers to only one thing)