Word: upsettest
Part of speech: Verb
Syllables: up
settest
Definition: Alternative form of upset; used of an unexpected defeat of a team favored to win
Morphemes:
Affix: up-
Language: en
PoS: Prefix
Meaning: Used to indicate higher position or direction, literally or figuratively.
Affix: set
Language: en
PoS: Verb
Meaning: To defeat a contract.
Affix: -est
Language: en
PoS: Suffix
Meaning: Used to form the superlative of adjectives and adverbs.