This is the 1635th most frequent Polish word.
nikomu
"To no one" or "nobody" (dative case).
The word 'nikomu' in this sentence indicates that the secret will not be shared with any person.
Nikomu nie powiem twojego sekretu.
I will not tell your secret to anyone.
Here, 'nikomu' refers to 'anyone' who requires assistance, showcasing a positive obligation.
Muszę pomóc nikomu, kto tego potrzebuje.
I must help anyone who needs it.
In this example, 'nikomu' denotes 'anyone', emphasizing that there was no harm caused to anyone.