Solidnymi

Solidnymi is the instrumental plural form of the Polish adjective solidny, meaning solid, reliable, or sturdy. It is used to modify nouns in the instrumental case in the plural and can describe both physical robustness and credibility or soundness of arguments, plans, or institutions.

In usage, solidnymi typically accompanies plural nouns in instrumental function. Common examples include solidnymi fundamentami (with solid foundations), solidnymi dowodami (with solid evidence), solidnymi narzędziami (with solid tools), and solidnymi podstawami projektu (with solid bases for the project). The form is the standard instrumental plural across genders, so it appears with masculine personal nouns as well as with feminine and neuter nouns in the plural.

Morphology and agreement follow standard Polish adjective declensions. The base adjective solidny declines through feminine, neuter, and plural forms, while in the instrumental plural it becomes solidnymi for all genders. This form contrasts with singular variants, such as solidnym (instrumental singular) or solidne (nominative/accusative plural), illustrating how meaning shifts with number and case.

Etymology traces solidny to a common Slavic root meaning sturdy or trustworthy, with influences from international terms for solidity. In contemporary Polish, solidny and its instrumental plural solidnymi are widely used in business, journalism, and everyday speech to denote reliability, credibility, and physical robustness.

See also: solidność (solidity or soundness) and solidny as an adjective describing reliability or stability.