fail-safe
brittle
fault-tolerant
crashable
flaky
instability
take a shit
never interrupt your enemy when he is making a mistake
smoothness
redeeming
close the stable door after the horse has bolted
defend
risklessness
hold
guard
weaklink
nugatory
unfix
setback
safetied
bulletproof
antihazard
clear
guardrail
throw
ruin
bluescreen
faultless
let lie
antireplay
save vs.
anti-exploit
softly, softly, catchee monkey
omalous
failure rate
keep up
fatal
maintain
preserve
safety-critical
conserve
wariness
caution
forethought
care
precaution
avertible
fail-soft
right away
bottleneck
errorist
fault-prone
whistle past the graveyard
control
promptly
fail fast
catch
crush
hindrance
nonce
precautionary
inerrably
preventive
unmitigable
an ounce of prevention is better than a pound of cure
Jenga
incumbrance
failureproof
interrupt
redundancy
trip up
bug check
interference
break down
hitch
bathtub curve
encumbrance
precautional
dysfunction
-safe
preventative
hinderance
bad luck
chink
robust
single point of failure
misfortune
antiretaliatory
fast
surgical strike
passé
tip-and-run
monkey trap
counter-sabotage
regret
hazardproof
hit-and-run
the terrorists will have won
to find a better fitting word. Finally, thanks to ChatGPT, the overall results have been greatly improved.