Word: decelerative
Part of speech: Adjective
Syllables: de
ce
ler
a
tive
Definition: Relating to, or causing deceleration
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 cause a change of velocity.
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: -ive
Language: en
PoS: Suffix
Meaning: An adjective suffix signifying relating or belonging to, of the nature of, tending to, or serving to; as: affirmative, active, conclusive, corrective, diminutive.
Etymology Compounds: Affix: -ivus
Language: la
Decoded: -ivus
PoS: Suffix
Meaning: Adjective suffix.