Definitions

1. noun

the direction or source from which water flows in a river, especially from the mountains towards the sea.

“The kayaker paddled upstream for hours before reaching the lake.”

2. adverb

in the direction or source from which water flows in a river, especially from the mountains towards the sea.

“They had to swim upstream to reach the other side.”

3. verb

to move in the direction or source from which water flows in a river, especially from the mountains towards the sea.

“The fish swam upstream to spawn in the shallow waters.”

4. adverb

in a direction or manner that is contrary to the normal or expected flow.

“The company’s fortunes went upstream after the new product launch.”

5. adverb

towards a more difficult or higher point.

“The hikers had to go upstream to reach the challenging part of the trail.”