This is the 683rd most frequent Czech word.
někoho
The Czech word "někoho" means "someone" or "somebody" in the accusative case.
Here 'někoho' is used as the object of the verb 'viděli' (we saw), indicating 'someone' who is seen.
Viděli jsme někoho poblíž domu.
We saw someone near the house.
In this context, 'někoho' is the object of the preposition 'bez' (without), denoting 'someone' whose absence is noted.
Bez někoho už nikdy nebudeme úplní.
Without someone, we will never be whole again.
Here, 'někoho' serves as the object of the verb 'zeptám se' (I will ask), implying 'someone' who is being asked.