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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
legitimate
genuine
good
creditable
real
actual
original
unadulterated
indisputable
official
indubitable
bonafide
uncounterfeited
honest
bona fide
attested
unfaked
legal
strict
veridical
orthodox
reputable
well-established
up front
sterling
justified
learned
regular
scholarly
loyal
conforming
confirmed
righteous
respected
documented
straight from horse's mouth
from the horse's mouth
pure
unalloyed
undisputed
unfeigned
certifiable
echt
lawful
proved
pucka
pukka
right
certain
fair dinkum
based on facts
true to life
straight from the horse's mouth
the real McCoy
for real
on the nail
fact-based
fair
astute
sensible
wise
sagacious
judicious
intelligent
percipient
shrewd
perceptive
recognized
US
sanctioned
fly
tried-and-true
canonical
significant
recognised
UK
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
shield
defense
US
insurance
preventive measure
deterrent
guard
prophylactic
screen
provision
buffer
safety measure
safety device
safety net
protector
backstop
preventative measure
belt and braces
care
safety valve
fallback
protective umbrella
sheet anchor
safety plug
hindrance
block
preventative
impediment
prevention
remedy
protective
obstruction
curb
obstacle
check
restraint
precautionary measure
neutralizer
disincentive
protective measure
anticipatory measure
cover
aegis
surety
armor
US
shelter
ward
buckler
ammunition
egis
wall
indemnity
armour
UK
bulwark
escort
armament
convoy
safety
cushion
immunity
fortification
safeguarding
guarding
barrier
support
preservation
assurance
safekeeping
stronghold
refuge
shielding
guarantee
bumper
bastion
guardianship
resistance
sanctuary
custody
hedge
conservation
indemnification
salvation
pad
rampart
buttress
warranty
keeping
fence
coverage
shock absorber
defender
charge
weapon
haven
fender
supervision
deterrence
safeness
custodianship
protecting
trust
asylum
upkeep
upholding
barricade
backing
maintenance
fastness
mail
tutelage
saving
warrant
keep
safe keeping
mainstay
supporter
prop
invulnerability
resilience
strength
shade
insurance policy
cocoon
cushioning
reassurance
stability
insurance cover
absorber
protective device
self-defense
safety guard
warfare
weaponry
munitions
allowance
endorsement
citadel
arms
patronage
something to fall back on
defenses
US
defences
UK
apron
mask
financial protection
hiding
concealment
housing
trusteeship
life assurance
life insurance
preventative medicine
preventive medicine
harbour
UK
retreat
harbor
US
preserving
conserving
sustentation
protectorship
possession
harborage
safe harbour
UK
perpetuation
preserval
evaporation
care and feeding
storage
tanning
refrigeration
safe harbor
US
reinforcement
plate
breastplate
panoply
hiding place
surveillance
pledge
armor plate
suit of armor
protective clothing
bulletproof vest
chain mail
flak jacket
coat of mail
suit of armour
body armor
body armour
breastwork
embankment
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
bulwark
cover
buckler
armor
US
ward
ammunition
wall
aegis
armament
armour
UK
egis
bumper
rampart
pad
cushion
fender
fence
protective device
safety
safety guard
security
defence
UK
precaution
preventive
surety
escort
prophylactic
shelter
indemnity
defense
US
palladium
caution
convoy
safety measure
provision
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fail-safe
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?
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?
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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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