dlouhým
Dlouhým is a Czech word that translates to "long" in English. It is the instrumental case of the adjective "dlouhý," meaning long. This grammatical form is used when the adjective modifies a noun that is the object of a preposition or verb that requires the instrumental case, or when it indicates the means or manner by which something is done. For example, one might say "jít dlouhým krokem" which means "to walk with a long stride," where "dlouhým" is in the instrumental case modifying "krokem" (stride).
The word "dlouhý" itself is a fundamental adjective in the Czech language, used to describe physical length,