adverb, adverb taking the 'to' particle
moment by moment; hour by hour; with each passing moment
Describes a situation that changes or progresses continuously, often with a sense of urgency or steady advance. Commonly used with verbs of change, approach, or deterioration.
The typhoon is approaching moment by moment.
状況は刻々と変化している。
The situation is changing with each passing moment.
The typhoon's path is changing moment by moment.
The day of the exam was drawing closer and closer.
The situation on the ground is deteriorating by the minute.
Updates on the accident kept coming in moment by moment.
Non-repetition kanji variant; less common than 刻々.