unreliableness
Tendency toward inconsistency
The quality of being unreliable—not dependable or trustworthy.
The word is rare; unreliability serves the same purpose and appears far more often.
The unreliableness of his memory made him a poor witness.
Lacking regularity or consistency
- unpredictableCannot be anticipated
- variableProne to fluctuation
- irregularDeviating from normal patterns
- sporadicOccurring irregularly, infrequently
fluctuating · uneven · patchy · intermittent · changeable · inconstant · wavering · vacillating
Sense of unease about motives
- doubtLack of firm belief
- mistrustLack of faith
- skepticismDisposition toward doubt
- warinessCautious distrust
disbelief · misgivings · caution · cynicism · questioning · incredulity · guardedness · reservation
Crumbly or unreliable
- scatterbrainedLacking mental focus
- carelessInattentive, prone to mistakes
- negligentFailing in due care
- forgetfulFailing to retain information
noncommittal · fickle · flighty · impulsive · indecisive · frivolous · reckless · thoughtless
Of uncertain validity
- doubtfulUncertain of truth
- iffyUncertain, questionable
- tentativeUncertain and provisional
- unpredictableCannot be anticipated
precarious · risky · hazardous · insecure · unstable · dicey · chancy · speculative
Having defects or errors
- unsoundWeak or flawed
- shoddyOf poor craftsmanship
- substandardBelow required quality
- deficientHaving too little
inadequate · imperfect · fallible · fragile · weak · inferior · ineffective · malfunctioning
erratic
Lacking regularity or consistency
- unpredictableCannot be anticipated
- variableProne to fluctuation
- irregularDeviating from normal patterns
sporadic · fluctuating · uneven · patchy · intermittent · changeable · inconstant · wavering · vacillating · nonuniform
suspicion
Sense of unease about motives
- doubtLack of firm belief
- mistrustLack of faith
- skepticismDisposition toward doubt
wariness · disbelief · misgivings · caution · cynicism · questioning · incredulity · guardedness · reservation · apprehension
flaky
Crumbly or unreliable
- scatterbrainedLacking mental focus
- carelessInattentive, prone to mistakes
- negligentFailing in due care
forgetful · noncommittal · fickle · flighty · impulsive · indecisive · frivolous · reckless · thoughtless · heedless
questionable
Of uncertain validity
unpredictable · precarious · risky · hazardous · insecure · unstable · dicey · chancy · speculative · dubious
faulty
Having defects or errors
- unsoundWeak or flawed
- shoddyOf poor craftsmanship
- substandardBelow required quality
deficient · inadequate · imperfect · fallible · fragile · weak · inferior · ineffective · malfunctioning · glitchy
unreliablenessreliability
Consistent, predictable performance
reliableness · dependability · dependableness · trustworthiness · steadfastness
reliable, reliance, unreliable, reliability, unrelated, unremarkable, reliant, unrecognized, undependable