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What is another word for
fail-safe
?
Need
synonyms for fail-safe
? Here's a list of
similar words
from our
thesaurus
that you can use instead.
Contexts
▼
▲
Adjective
Infallible or not very likely to fail
Guaranteed not to fail
(
tried and true/tested
)
Tested, hence, proven to be firm or reliable
Able to be relied on or trusted
Accurate or reliable, especially in terms of information provided
Noun
A measure taken in advance to prevent something dangerous, unpleasant, or inconvenient from happening
Safety precaution
… more ▼
▲
Adjective
▲
Infallible or not very likely to fail
sure
infallible
certain
unfailing
surefire
can't-miss
constant
reliable
dependable
endless
boundless
never-failing
inexhaustible
steadfast
continuous
ceaseless
faithful
undying
unerring
persistent
loyal
true
continual
steady
unlimited
unfading
bottomless
unflagging
staunch
come-through
abiding
unshakable
tried-and-true
delivering
solid
enduring
invariable
continuing
lasting
diligent
same
unrelenting
unchanging
consistent
straight
eternal
assiduous
absolute
there
dyed-in-the-wool
trustworthy
tried and true
counted on
tried and tested
rock solid
more ❯
Adjective
▲
Guaranteed not to fail
confident
covered
dependable
foolproof
goofproof
guaranteed
protected
reliable
reliant
safeguarded
secure
sound
sure
certain
sure-fire
infallible
safe
unfailing
tried and true
tried and tested
trustworthy
assured
efficacious
effective
can't-miss
surefire
watertight
definite
never-failing
tested
good
unerring
certified
unimpeachable
never failing
cast-iron
in the bag
affirmed
excellent
tried
flawless
perfect
unassailable
faultless
unbreakable
idiot-proof
airtight
sovereign
accurate
decided
stated
insured
concluded
stipulated
warranted
ensured
well-built
well-engineered
failsafe
firm
settled
nailed-on
confirmed
established
unshakable
copper-bottomed
iron-clad
fixed
secured
bound
attested
high-quality
well engineered
for sure
on ice
for a fact
sealed
sure enough
a lock
unbeatable
handy
solid
agreeable
undeceivable
unquestionable
exact
always effective
effectual
efficient
positive
right
acceptable
correct
omniscient
apodictic
incontrovertible
satisfactory
helpful
authoritative
useful
inerrant
steady
inerrable
satisfying
staunch
honourable
UK
trusty
true
responsible
reputable
faithful
honest
virtuous
sensible
ethical
incorruptible
principled
upright
steadfast
truthful
loyal
unswerving
unwavering
constant
calculable
righteous
mature
trustable
honorable
US
straight
saintly
fly right
worthy of trust
to be trusted
above suspicion
level-headed
true blue
boy scout
tried and trusted
up front
down home
tried-and-true
on the level
straight-up
true-blue
full of integrity
rock solid
always there
as good as one's word
more ❯
Adjective
▲
(
tried and true/tested
)
Tested, hence, proven to be firm or reliable
tried
reliable
dependable
sure
true
trustworthy
certain
trusted
unfailing
attested
calculable
established
good
proved
proven
responsible
safe
secure
solid
sound
steady
tested
trustable
trusty
approved
certified
classic
consistent
constant
demonstrated
failsafe
faithful
recognised
UK
recognized
US
reputable
staunch
steadfast
used
tried and tested
tried and true
tried-and-true
time-honoured
tried out
true-blue
put to the test
safe as houses
demonstrable
foolproof
well engineered
tested and proved
well-built
time-tested
high-quality
well-founded
well-engineered
well-tried
well-grounded
honest
loyal
never-failing
firm
strong
straightforward
upright
credible
predictable
unswerving
unwavering
tried and trusted
infallible
devoted
resolute
dutiful
dedicated
committed
unmistakable
effective
uncompromising
unshakable
enduring
fast
more ❯
Adjective
▲
Able to be relied on or trusted
sure
certain
assured
categorical
conclusive
guaranteed
infallible
unfailing
absolute
clear
definite
indisputable
inevitable
irrefutable
unambiguous
undeniable
unequivocal
authoritative
concrete
decisive
foolproof
genuine
incontrovertible
indubitable
irrevocable
palpable
true
unerring
unmistakable
confirmable
confirmed
doubtless
manifest
obvious
patent
real
recognised
UK
recognized
US
resolute
surefire
unquestionable
verifiable
demonstrable
determinate
firm
incontestable
positive
secure
accurate
convincing
failsafe
inerrant
precise
questionless
safe
solid
transparent
undoubted
unqualified
in the bag
sure-fire
as sure as eggs is eggs
can't-miss
sealed
affirmed
cast-iron
for sure
on ice
a lock
for a fact
sure enough
Adjective
▲
Accurate or reliable, especially in terms of information provided
definitive
authentic
valid
accurate
reliable
sound
true
dependable
trustworthy
authoritative
factual
precise
convincing
credible
thorough
veracious
correct
exact
certified
faithful
believable
faultless
safe
errorless
failsafe
infallible
kosher
unerring
truthful
verifiable
veritable
authenticated
circumstantiated
legit
proper
proven
solid
supported
validated
verified
compelling
well-founded
on the money
without error
irrefutable
unimpeachable
unquestionable
all right
realistic
veridical
strict
genuine
literal
right
certain
on the nail
real
close
objective
legitimate
honest
unvarnished
lifelike
verisimilar
actual
documentary
nonfictional
hard
dinkum
historical
bang on
matter-of-fact
spot on
on the level
bona fide
fact-based
error-free
just
documented
on the mark
similar
undistorted
on the beam
on the button
provable
unembellished
demonstrable
down-to-earth
logical
confirmable
cogent
evident
unelaborated
straightforward
so
dead-on
as true as I'm sitting here
on the line
direct
spot-on
on-target
undeceptive
high-principled
as true as I'm standing here
true-blue
on the up and up
like it is
reputable
based on facts
true to life
straight from the horse's mouth
the real McCoy
for real
creditable
sure
unadorned
fair
verbatim
circumstantial
unadulterated
concrete
existent
very
undoubted
unexaggerated
veristic
absolute
effective
straight from horse's mouth
de facto
unprejudiced
true-to-life
word for word
true-life
telling it like it is
as it really happened
sure-enough
scientific
card-carrying
unbiased
more ❯
Noun
▲
A measure taken in advance to prevent something dangerous, unpleasant, or inconvenient from happening
safeguard
precaution
preventive
palladium
caution
protection
security
defence
UK
defense
US
shield
insurance
preventive measure
guard
screen
deterrent
provision
buffer
safety device
safety net
safety measure
protector
safety valve
fallback
protective umbrella
sheet anchor
safety plug
cover
armor
US
ward
aegis
bulwark
wall
ammunition
shelter
hindrance
egis
buckler
block
preventative
impediment
obstruction
indemnity
surety
curb
check
restraint
armour
UK
prevention
remedy
protective
armament
prophylactic
obstacle
neutralizer
disincentive
precautionary measure
anticipatory measure
protective measure
backstop
preventative measure
belt and braces
care
safety
cushion
immunity
fortification
safeguarding
guarding
support
barrier
preservation
safekeeping
assurance
stronghold
refuge
shielding
bumper
guarantee
bastion
guardianship
resistance
sanctuary
custody
hedge
conservation
rampart
salvation
indemnification
pad
buttress
keeping
fence
warranty
shock absorber
coverage
defender
charge
weapon
haven
fender
supervision
deterrence
safeness
custodianship
protecting
trust
asylum
upkeep
upholding
barricade
backing
maintenance
fastness
tutelage
saving
warrant
keep
safe keeping
mainstay
supporter
prop
invulnerability
resilience
strength
insurance policy
cocoon
cushioning
shade
reassurance
stability
insurance cover
protective device
absorber
self-defense
safety guard
warfare
weaponry
munitions
endorsement
citadel
arms
patronage
something to fall back on
defenses
US
defences
UK
apron
mask
preserving
conserving
sustentation
hiding
concealment
housing
trusteeship
life assurance
life insurance
harbour
UK
retreat
harbor
US
allowance
protectorship
perpetuation
possession
harborage
safe harbour
UK
preserval
retention
care and feeding
storage
financial protection
safe harbor
US
hiding place
reinforcement
plate
mail
breastplate
panoply
surveillance
pledge
breastwork
embankment
armor plate
suit of armor
protective clothing
bulletproof vest
chain mail
flak jacket
coat of mail
suit of armour
body armor
body armour
collateral
bank
castellation
battlements
pawn
bond
underwriting
gage
US
hostage
battlement
bartizan
earthwork
earnest
guaranty
bail
partition
protective wall
parapet
buffet
covenant
gauge
UK
contract
more ❯
Noun
▲
Safety precaution
safety valve
overflow
valve
safety device
safety precaution
insurance
shield
guard
screen
protection
safety net
preventive measure
safety plug
sheet anchor
buffer
fallback
protective umbrella
safeguard
cover
bulwark
armor
US
ward
aegis
wall
buckler
ammunition
egis
armament
armour
UK
bumper
rampart
pad
cushion
fender
fence
protective device
safety
safety guard
defence
UK
security
defense
US
precaution
preventive
shelter
palladium
provision
indemnity
surety
prophylactic
caution
safety measure
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fail-safe
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Nearby Words
fail-safes
fails at
fails heavily
fails miserably
fails to
fails to agree
failsafe
fails
failproof
failovers
failover
fail miserably
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fail-safe
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