impair
pejorate
disimprove
do more harm than good
disimprovement
worsen
exacerbate
compound
fan the flames
kick someone when they are down
decline
ameliorate
confound
kick a dog when it's down
aggravate
exasperate
make matters worse
water down
misalter
rub salt in someone's wounds
deterioratingly
twist the knife
deteriorate
aggravation
go backwards
exacerbation
take a turn for the worse
exacerbatingly
run
break down
exacerbating
exasperating
distortion
aggravating
deformation
rub salt in the wound
go from bad to worse
fall away
the cure is worse than the disease
fall
turn around
retrograde
reap the whirlwind
pick up
retrogressive
shape up
drop behind
crappify
weaken
suffer
make heavy weather of
sap
freefall
detrimentalness
detrimentality
worsening
crash
agudization
forfeit
rough end of the pineapple
disserve
outblunder
dig one's own grave
ruin
top it off
below average
impairment
harm
worse
damage
wusser
lesser of two evils
meliorate
misperform
improve on
gild the lily
sufferability
turn
worserer
flaw
worsened
ill turn
worsely
disavail
disservice
lowen
exacerbatory
ill service
go to shit
poison
decay
deteriorationist

English words for 'make worse or less effective'

As you may have noticed, above you will find words for "make worse or less effective". Hover the mouse over the word you'd like to know more about to view its definition. Click search related words by phrase or description. to find a better fitting word. Finally, thanks to ChatGPT, the overall results have been greatly improved.

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