This is the 322nd most frequent Armenian word.
քաղաքացու
"Citizen."
The word 'քաղաքացու' refers to the possessive form of 'citizen', indicating a duty belonging to the citizen in a societal context.
Քաղաքացու պարտքն է իր երկրին ծառայելը։
A citizen's duty is to serve their country.
In this sentence, 'քաղաքացուն' is in the dative case, showing that the action (welcoming) is directed toward the new citizen.
Նոր քաղաքացուն ողջունեցին քաղաքապետարանում։
The new citizen was welcomed at the city hall.
Here, 'քաղաքացու' represents the possessive form, addressing the rights associated with each citizen.