あらた改arataまるmaru
1.
To transition from an old state to a new one, indicating a significant change or improvement in conditions or situations.
2.
To adopt a formal or serious demeanor that deviates from one's usual behavior, often in preparation for a ceremonial or official context.
3.
To undergo a deterioration in health, often leading to a critical condition or severe illness.
Example:
長年の習慣はなかなか改まらない。