Where does “singlet” come from?

Singlet derives from English single, from Middle French -el, ultimately from Proto-Indo-European sem- meaning "one," which developed through Latin -culus as a diminutive suffix.

singlet (English): A vest; a sleeveless garment with a low-cut neck,...

Definitions

  1. A vest; a sleeveless garment with a low-cut neck,...

Ancestry of “singlet”, step by step

singlet traces back through two separate lines of ancestry.

via English single

StepLanguageWordMeaning
1EnglishsingleNot accompanied by anything else; one in number;...
2Middle Englishsingle
3Old Frenchsenglesingle; alone; alone; in an unaccompanied way
4Late Latincingulanominative/accusative/vocative plural of cingulum
5LatinCingulumsituated on a lofty hill, now Cingoli
6Latin-ulumUsed to form a noun of instrument or means from a...
7Proto-Indo-European-tlomAlternative form of *-trom
8Proto-Indo-European-tromForms nouns denoting a tool or instrument
9Proto-Indo-European-tḗrDerives agent nouns from verbs, denoting someone...

via English let

StepLanguageWordMeaning
1EnglishletTo allow to, not to prevent; To leave; To allow...
2Middle Englishletento let
3Old Englishlǣtanto let; leave; to let go, leave; to allow, let...
4Proto-West Germaniclātanto let, to allow; to leave alone
5Proto-Germaniclētanąto let, to allow; to leave alone
6Proto-Indo-Europeanleh₁d-to be tired

Words derived from “singlet

Every word from Proto-Indo-European -tḗr
singlet — Etymology, Origin & Word History | Etymology Explorer