neformalios
Neformalios is the feminine plural form of the Lithuanian adjective neformalus, meaning informal. It is used to describe feminine plural nouns and signals that something is not part of formal structures or official arrangements. Examples of its use include phrases like neformalios grupės and neformalios veiklos.
In practice, neformalios appears in social sciences, education, culture, and everyday speech to denote informal, unofficial,
Origin and usage notes: the form is created with the negation prefix ne- attached to the base