かなり可成kanari
1.
Significantly or notably to a certain degree, often implying an extent that is meaningful or worth noting.
2.
To a fair extent, indicating a level of moderation or balance in the description of a situation or object.
3.
To a large but not extreme degree, suggesting a sense of substantiality without overstatement.
Example:
４マイルはかなりの距離だ。