This is the 15440th most frequent Polish word.
spontanicznym
"Spontanicznym" means "spontaneous" in English.
As an adjective, describing the character trait of being spontaneous.
On jest bardzo spontanicznym człowiekiem.
He is a very spontaneous person.
As an adjective, describing the nature of the location as chosen impulsively.
Spotkaliśmy się w spontanicznym miejscu, gdzie akurat mieliśmy ochotę.
We met in a spontaneous location, where we just felt like being.
As an adjective, defining the nature of the idea as unplanned and instant.