1.
later on, in the future, eventually
A point further in the future, often implying consequences or outcomes that will emerge over time. Emphasizes a longer-term perspective compared to simple あと or のち.
Usage
後々 emphasizes future consequences more strongly than 後で or 後に. It often carries a cautionary nuance — warning that present actions will have long-term effects. The reduplication of 後 intensifies the sense of distance in time.
Common patterns
Can function as an adverb (後々困る) or as a noun modified by の (後々のことを考える).