Word: decelerator
Part of speech: Noun
Syllables: de
cel
er
a
tor
Definition: someone or something that decelerates.
Morphemes:
Affix: de-
Language: en
PoS: Prefix
Meaning: Intensifying; make more intense, stronger, or more marked; 
Etymology Compounds: Affix: dē-
Language: la
Decoded: de-
PoS: Prefix
Meaning: de-
Affix: accelerate
Language: en
PoS: Verb
Meaning: To quicken the natural or ordinary progression or process of.
Etymology Compounds: Affix: ad
Language: la
Decoded: ad
PoS: Preposition
Meaning: for, to, toward
Affix: celer
Language: la
Decoded: celer
PoS: Adjective
Meaning: fast, swift, quick, speedy, fleet
Affix: -ō
Language: la
Decoded: -o
Meaning: denominative
Affix: -or
Language: en
PoS: Suffix
Meaning: Creates an agent noun, indicating a person who does something.