IPA: /ˈveɪkənsi/
KK: /ˈveɪkənsi/
A position or space that is not filled or occupied, such as a job opening or an empty room.
The hotel had a vacancy for the weekend, so we decided to stay there.
Vacancy → It is formed from "vacare" (meaning to be empty or free) and the suffix "-cy" (indicating a state or condition). The word "vacancy" refers to the state of being empty or unoccupied.
Think of a space that is 'empty' ('vacare') — that's what a vacancy means, a condition of being unoccupied.