mírnými
mírnými is a Czech word, the instrumental plural form of the adjective mírný. Mírný translates to "mild," "gentle," "moderate," or "temperate" in English. Therefore, mírnými is used to describe multiple things that are mild, gentle, moderate, or temperate. For example, it could be used in a sentence discussing "mírnými teplotami" (mild temperatures) or "mírnými podmínkami" (moderate conditions). The specific meaning of mírnými depends heavily on the noun it modifies. It conveys a sense of lacking extremity or intensity.