Meaning: “to delight in glory”
The name is a very old and seldom used Polish name. The name is first recorded in Polish documents of 1192.
It is composed of the Old Slavonic elements, niego meaning “delight” and slav meaning “glory.” Hence the name would roughly translate to mean “to delight in glory.”
Diminutives include: Niega, Niegan, Niego, Niegoł, Niegost, Niegosz, Nieguta, Niegusz, Niesz, Nieżęta, Nieżka and Nieszka.
Other forms include the Bulgarian Něgoslav and the Serbo-Croatian, Njegoslav, Negislav and Negoslav.
The Polish feminine form is Niegosława.
In Poland the designated name-days are July 1 and August 8.