Word: upstream
Part of speech: Adjective
Syllables: up
stream
Definition: in a direction against the flow of a current or stream of fluid (typically water); upriver
Morphemes:
Affix: up-
Language: en
PoS: Prefix
Meaning: Used to indicate higher position or direction, literally or figuratively.
Affix: stream
Language: en
PoS: Noun
Meaning: A small river; a large creek; a body of moving water confined by banks.