いったい一帯ittai
1.
A continuous expanse of land that is recognized as being connected or related in some way, often used to describe geographical features or specific districts.
2.
The entirety of a specific locale, encompassing not just the central area but also the surrounding regions and their characteristics, often implying a sense of uniformity or collective identity within that space.
Example:
雨があたり一帯に降っている。