This is the 600th most frequent Lithuanian word.
kažkas
"Kažkas" means "something" or "someone" in English.
'Kažkas' is used here as a pronoun meaning 'someone', referring to an unknown or unspecified person.
Kažkas beldžiasi į duris.
Someone is knocking on the door.
'Kažkuo' is an inflected form of 'kažkas', meaning 'something', referring to an unspecified object or matter.
Ar gali man padėti su kažkuo?
Can you help me with something?
'Kažkas' is used to mean 'something', referring to an unspecified issue or problem.