unexacting
nonrigorous
unrigorous
unpainstaking
nonexhaustive
unexhaustive
nonintensive
unthorough
nonconducive
unanalytical
nonanalytical
undiligent
unstreamlined
nonstreamlined
sketchy
clean
tortuous
nonanalyzable
nonadjustive
unadvanced
nonadvanced
nonoptimal
nonprotractile
untempered
untesting
inextensible
nonextensile
unhardened
unevaluated
unthresholded
inadept
unmuscular
formidability
nonrobust
unrobust
toughness
casual
effortless
uncomplaisant
unintensive
unoptimized
nonoptimized
nonmaximal
nonoptimizable
unconsignable
nonarbitrable
nonthetic
trivially
unoptimizable
easiness
nonconstrained
unexpedited
ungreppable
uncalculated
underchallenging
uneasy
underchallenged
unpliable
unsystematical
copout
nonpliable
impeded
uphill
unexpeditious
unworldly
loose
unmethodical
nonstrained
unmustered
hardly
unconstrained
hard
unwieldable
nontechnique
unapproximated
nonultrastructural
nonmethodical
uneffigiated
imputrescible
unacclimatized
difficult
semihard
undutiable
unliquified
insufficiently
unabatable
noncomplicated
unempirical
slight
nonputrescible
nondutiable
nonsurvivable
dys-
challengeless
unobstructive
nonchallenging
unmaximized
unexacting
nonrigorous
unrigorous
unpainstaking
nonexhaustive
unexhaustive
nonintensive
unthorough
nonconducive
unanalytical
nonanalytical
undiligent
unstreamlined
nonstreamlined
sketchy
clean
tortuous
nonanalyzable
nonadjustive
unadvanced
nonadvanced
nonoptimal
nonprotractile
untempered
untesting
inextensible
nonextensile
unhardened
unevaluated
unthresholded
inadept
unmuscular
nonrobust
unrobust
casual
effortless
uncomplaisant
unintensive
unoptimized
nonoptimized
nonmaximal
nonoptimizable
unconsignable
nonarbitrable
nonthetic
unoptimizable
nonconstrained
unexpedited
ungreppable
uncalculated
underchallenging
uneasy
underchallenged
unpliable
unsystematical
nonpliable
impeded
unexpeditious
unworldly
loose
unmethodical
nonstrained
unmustered
unconstrained
unwieldable
unapproximated
nonultrastructural
nonmethodical
uneffigiated
imputrescible
unacclimatized
difficult
semihard
undutiable
unliquified
unabatable
noncomplicated
unempirical
slight
nonputrescible
nondutiable
nonsurvivable
challengeless
unobstructive
nonchallenging
unmaximized
trivially
uphill
hardly
hard
insufficiently
formidability
toughness
easiness
copout
nontechnique
English words for 'not rigorous'
As you may have noticed, above you will find words for "not rigorous". Hover the mouse over the word you'd like to know more about to view its definition. Click 
to find a better fitting word. Finally, thanks to ChatGPT, the overall results have been greatly improved.
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Moisture
to raise money
contraposition
positron emission tomography
steamy
low water
to beat fast (of one's heart)
to shoot off
tête-à-tête
guano
the brain.
impossible!
homeless.
perpetual youth and longevity
an estate in the country
royal
bumblebees
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calisthenics
Cauchy sequence
with vigor
the Arctic
pollution.
putrefaction
rapprochement
impassioned
To dig
tease
latest fashion
worriedly
the sticks
shrimp
reserve fund
cranky
predictable
suspense
mother-in-law
neglecting
conductor
string
run-of-the-mill
to embarrass
vexed
Directly
to be proud
compound
pessimism
plateau
alone
awesome