This is the 4367th most frequent Russian word.
будущим
The Russian word "будущим" means "future" (in the instrumental case).
The word 'будущим' is used as a noun in instrumental case to signify 'future' in the sense of a state or time ahead.
Мы должны заботиться о нашем будущем.
We must care about our future.
The word 'будущим' is used as an instrumental case modifier to indicate a specific time period ahead.
В будущем, технологии изменят мир.
In the future, technologies will change the world.
The word 'будущим' is instrumental case indicating a condition or state related to 'future'.