vlastnými

The word "vlastnými" is a Slovak grammatical form. It is the instrumental plural of the adjective "vlastný," which translates to "own" or "proper" in English. This form is used when referring to something belonging to multiple entities or when emphasizing possession or inherent qualities in a plural context.

For example, in a sentence like "Robia to vlastnými rukami," which means "They are doing it with their own hands," "vlastnými" is used to indicate that the hands belong to the people performing the action. Similarly, "Použili vlastnými slovami" translates to "They used their own words," where "vlastnými" modifies "slovami" (words) to denote their personal expression.

The instrumental case in Slovak, indicated by the "-mi" ending in this instance, signifies the means by which an action is performed or the agent involved. Therefore, "vlastnými" in the instrumental plural context highlights that the action is carried out through or with something that belongs to the subject or is inherently part of them. It is a common and essential part of Slovak grammar for expressing possession and personal agency in plural constructions.