singulus

Etymology
From, from + distributive particle  (compare 🇨🇬).

Numeral

 * 1)  one each, one apiece
 * 2) each one, every one
 * 3) one at a time, one by one
 * 4) separate, single
 * 1) one at a time, one by one
 * 2) separate, single
 * 1) separate, single

Usage notes
In Classical Latin, this adjective was used only in the plural, functioning as the distributive form of the numeral 1. Thus, the English descendant is somewhat of a false friend: Classical Latin used other words such as, ,  when a grammatically singular adjective with the sense of "lone", "sole", "single", "singular" was needed (although  can be found with this sense pre- and post-classically ).

Descendants


From diminutive :