This is the 11329th most frequent Russian word.
дерусь
"I fight" or "I am fighting" (first-person singular of "драться").
Here, 'дерусь' is used in the context of standing up or striving for one's beliefs, indicating an abstract or metaphorical sense of fighting.
Я дерусь за свои идеалы.
I fight for my ideals.
In this sentence, 'дерусь' describes the act of physically engaging in a combat or sporting activity.
На ринге я дерусь с противником.
In the ring, I fight with an opponent.
Here, 'дерусь' represents standing up or confronting challenges, emphasizing determination in a figurative struggle.