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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
(
of a product
)
Consistently good in quality or performance
Having an outcome which is certain or beyond doubt
Accurate or reliable, especially in terms of information provided
Noun
(
archaic
)
A safeguard or source of protection
… more ▼
▲
Adjective
▲
Infallible or not very likely to fail
sure
unfailing
certain
infallible
surefire
can't-miss
dependable
reliable
trustworthy
tried and true
tried and tested
guaranteed
effective
steady
foolproof
sound
efficacious
unerring
solid
sure-fire
assured
definite
safe
faithful
true
steadfast
staunch
loyal
watertight
consistent
unbeatable
positive
acceptable
correct
handy
apodictic
incontrovertible
satisfactory
helpful
authoritative
unquestionable
exact
useful
always effective
never failing
effectual
inerrant
efficient
satisfying
right
enduring
straight
unchanging
unshakable
absolute
abiding
undying
tried-and-true
diligent
counted on
never-failing
rock solid
unlimited
assiduous
always there
dyed-in-the-wool
unfading
tested
sovereign
accurate
decided
stipulated
stated
insured
concluded
warranted
certified
ensured
more ❯
“The
fail-safe
plan ensured that every possible scenario was considered and accounted for, making it nearly impossible for any failure to occur.”
Adjective
▲
Guaranteed not to fail
dependable
reliable
guaranteed
sound
foolproof
goofproof
secure
confident
sure
certain
safe
infallible
never-failing
sure-fire
assured
good
trustworthy
tested
tried
unfailing
effective
efficacious
unerring
watertight
perfect
flawless
unassailable
tried and true
airtight
tried and tested
never failing
faultless
unbreakable
idiot-proof
“The
fail-safe
system installed in the airplane ensures that all critical functions will operate without any chance of failure.”
Adjective
▲
(
of a product
)
Consistently good in quality or performance
reliable
dependable
safe
failsafe
good
well-built
well-engineered
high-quality
well engineered
tried and tested
tried and true
trustworthy
proven
tested
established
tried
proved
reputable
certified
sure
true
unfailing
trusted
certain
sound
secure
solid
calculable
trusty
steady
attested
trustable
constant
demonstrated
faithful
tried-and-true
demonstrable
foolproof
time-tested
well-founded
well-grounded
tested and proved
well-tried
legit
responsible
recognized
US
approved
staunch
consistent
steadfast
classic
used
recognised
UK
tried out
time-honoured
put to the test
safe as houses
true-blue
more ❯
Adjective
▲
Having an outcome which is certain or beyond doubt
guaranteed
certain
sure
definite
affirmed
sealed
cast-iron
sure-fire
a lock
in the bag
on ice
for sure
sure enough
for a fact
assured
firm
confirmed
unimpeachable
certified
established
watertight
unshakable
settled
fixed
secured
bound
attested
copper-bottomed
iron-clad
nailed-on
categorical
unfailing
infallible
conclusive
undeniable
irrefutable
unambiguous
inevitable
unequivocal
clear
absolute
indisputable
decisive
incontrovertible
unerring
authoritative
true
concrete
unmistakable
indubitable
genuine
palpable
irrevocable
foolproof
recognized
US
confirmable
real
resolute
unquestionable
patent
doubtless
verifiable
manifest
surefire
obvious
secure
determinate
incontestable
demonstrable
positive
undoubted
accurate
unqualified
solid
convincing
questionless
safe
transparent
recognised
UK
inerrant
precise
failsafe
can't-miss
as sure as eggs is eggs
set
decided
agreed
inflexible
preset
arranged
unchangeable
allotted
predetermined
specified
prearranged
defined
determined
prescribed
unalterable
decreed
inalterable
express
frozen
invariable
explicit
immutable
exact
final
incommutable
unwavering
planned
flat
hard
steady
inexpugnable
stable
irreversible
abiding
unmovable
unbending
unmodifiable
hard-and-fast
undeviating
still
enduring
unblinking
definitive
stipulated
inveterate
stated
writ in stone
never-failing
rigid
resolved
hard and fast
not subject to change
more ❯
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
genuine
literal
realistic
certain
veridical
real
strict
objective
legitimate
honest
unvarnished
right
actual
documentary
nonfictional
hard
dinkum
historical
matter-of-fact
on the level
on the nail
bona fide
fact-based
documented
provable
unembellished
demonstrable
down-to-earth
logical
confirmable
cogent
evident
unelaborated
straightforward
so
close
bang on
dead-on
as true as I'm sitting here
on the line
direct
spot-on
on-target
spot on
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
lifelike
unadorned
fair
verbatim
circumstantial
unadulterated
concrete
existent
very
undoubted
verisimilar
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
▲
(
archaic
)
A safeguard or source of protection
safeguard
precaution
preventive
palladium
caution
protection
insurance
security
defence
UK
defense
US
shield
safety device
preventive measure
safety net
guard
screen
deterrent
provision
buffer
safety valve
safety measure
protector
fallback
protective umbrella
sheet anchor
safety plug
safety precaution
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
refuge
safety
fortification
sanctuary
safeguarding
haven
shielding
guarding
immunity
support
stronghold
barrier
preservation
asylum
safekeeping
fence
conservation
guardianship
retreat
resistance
salvation
cushion
bastion
assurance
rampart
hiding place
shade
citadel
upkeep
safe harbour
UK
guarantee
keeping
weapon
safe harbor
US
bumper
safe house
barricade
deterrence
safeness
buttress
protecting
weaponry
stockade
upholding
arms
saving
breastwork
embankment
parapet
fortress
munitions
fastness
palisade
earthwork
fort
shock absorber
hideaway
safe keeping
outwork
harbour
UK
harbor
US
hideout
circumvallation
harborage
vallum
hermitage
cloister
vallation
safe haven
hidey-hole
secret place
port in a storm
invulnerability
reinforcement
strength
hedge
warranty
absorber
reassurance
stability
insurance cover
force field
self-defense
backing
barbican
warfare
bartizan
custody
a roof
defender
battlement
lee
charge
supporter
supervision
backup
maintenance
something to fall back on
custodianship
mainstay
prop
defensive wall
elevation
conserving
trust
keep
preserving
tutelage
hiding
concealment
housing
sustentation
surveillance
reinsurance
preserval
guns
weapons
storage
armaments
resort
perpetuation
retention
care and feeding
den
hardware
additional coverage
extra cover
haunt
cottage
dacha
sanctum
arsenal
nest
lair
oasis
cabin
bolt-hole
safe place
adytum
place of safety
sanctum sanctorum
place of security
ordnance
firepower
safe space
redoubt
partition
buffet
berm
more ❯
“The
fail-safe
for our computer system ensures that all sensitive data is encrypted and protected from any potential security breaches.”
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fail-safe
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?
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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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