Word: speedest
Part of speech: Verb
Syllables: spee
dest
Definition: Alternative form of speed; a rate (usually rapid) at which something happens
Morphemes:
Affix: speed
Language: en
PoS: Noun
Meaning: The state of moving quickly or the capacity for rapid motion.
Affix: -est
Language: en
PoS: Suffix
Meaning: Used to form the superlative of adjectives and adverbs.