Where does “señero” come from?

señero (Spanish) comes from Old Spanish sennero, from Vulgar Latin singularius, from Latin singulāris, from Latin singulus, from Proto-Italic sem-g-lo-, from Proto-Indo-European sem- — together, one.

señero (Spanish): unique; lone, alone, solitary

Definitions

unique; lone, alone, solitary

Ancestry of “señero”, step by step

Step	Language	Word	Meaning
1	Old Spanish	sennero	alone, solitary
2	Vulgar Latin	singularius	single, peculiar; singular
3	Latin	singulāris	singular, unique, unusual
4	Latin	singulus	single; apiece; every
5	Proto-Italic	sem-g-lo-	—
6	Proto-Indo-European	sem-	together, one

Every word from Proto-Indo-European sem- →Every word from Proto-Italic sem-g-lo- →Every word from Latin singulus →