This is the 5285th most frequent Polish word.
rzadziej
Less frequently.
The word 'rzadziej' here is an adverb modifying how often the action of meeting should occur. It indicates a frequency, specifically a lower frequency than the current level.
Powinniśmy spotykać się rzadziej, aby mieć więcej czasu na inne plany.
We should meet less often to have more time for other plans.
In this sentence, 'rzadziej' is used to describe the reduced frequency of the action 'jogging'. It provides a comparative sense of doing the activity less frequently than before.
Ostatnio biegam rzadziej, ponieważ mam mniej wolnego czasu.
Recently, I jog less often because I have less free time.
Here, 'rzadziej' is used as a comparative adverb to describe the current frequency of buses running compared to an earlier time.