This is the 12032nd most frequent Polish word.
letnim
"Letnim" is the instrumental or locative singular form of the Polish adjective "letni," meaning "summer" or "summertime."
Here 'letnim' is used as an adjective agreeing in instrumental case, singular masculine gender, with 'wieczorem' (evening). The phrase 'podczas letnim wieczorem' describes the time of the concert.
Podczas letnim wieczorem odbył się koncert na świeżym powietrzu.
During the summer evening, a concert took place in the open air.
In this usage, 'letnim' is an adjective describing the organizational practice concerning a summer match, showcasing contextual dependency regarding seasonality.
On ma zasługi w letnim rozegraniu meczu.
He has merits in the summer match arrangement.
In this sentence, 'letnim' is an adjective in instrumental case, singular masculine gender, modifying the noun 'ogrodzie' (garden), describing its state as 'summery'.