ふと太futoるru
1.
To experience an increase in body mass, particularly due to the accumulation of fat or flesh, often associated with changes in diet or lifestyle.
2.
To undergo a transformation resulting in a heavier or more rounded physique, typically indicative of a surplus in nutrition or a sedentary lifestyle.
3.
To expand or increase in size, particularly referring to physical characteristics, which may also apply in a metaphorical sense to non-physical attributes like wealth.
Example:
あまり太ったのでカラーの前が合わなかった。