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retardation
noun
See more 4-syllable nouns

Divide retardation into syllables:

re · tar · da · tion

How to pronounce retardation:

Definition of retardation:

retardation (noun):
a decrease in rate of change.
an act or instance of retarding

Synonyms for retardation:

backwardness
belatedness
braking
change
deceleration
decline
delay
downshift
drop
ebb
lag
lateness
letup
mental retardation
modification
remission
retardant
retardent
retreat
slowdown
slowing
slowness
slump
subnormality
tardiness
Show 2 more

Antonyms for retardation:

acceleration
advance
aid
assistance
beginning
boon
boost
breakthrough
continuation
go
harm
hastening
help
hurt
increase
injury
liberation
peace
permeability
promotion
quickening
rise
speed-up
start
support
Show 1 more

Other 4-syllable words like retardation

Here are some other common words that have 4 syllables, like retardation does.

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Syllable Quiz
How many syllables in the word retake?

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