unreliability

Cannot be trusted

Unreliability is the quality of being undependable or inconsistent.

A car's unreliability means it breaks down often.

A person's unreliability means they fail to keep commitments or deliver as expected: His unreliability cost him the promotion.

The word applies to anything that can't be counted on—data, sources, machines, or people.

inconsistency

unpredictability

State resisting forecasts

instability · fluctuation · capriciousness · unevenness · inconstancy · changeability · fickleness · patchiness · intermittence · unsteadiness

uncertainty

unpredictability

State resisting forecasts

imprecision · vagueness · ambiguity · speculation · guesswork · chanciness · randomness

untrustworthiness

deceit

Deliberate misleading of others

falsehood · betrayal · disloyalty · treachery · unfaithfulness · backstabbing · perfidy · infidelity · two-facedness · shadiness

doubt

mistrust

Lack of faith

distrust · misgivings · disbelief · cynicism · caution · dubiousness · questioning · apprehension · hesitation · incredulity

fragility

vulnerability

Openness to harm

flimsiness · frailty · precariousness · brittleness · delicateness · tenuousness · unsteadiness · wobbliness

Categories
Opposites
consistency and dependability

unreliabilityreliability

Consistent, predictable performance

dependability · reliableness · dependableness · consistency · steadfastness

trustworthiness

unreliabilitytrustworthiness

Quality of being reliable

dependability · reliability · faithfulness · loyalty · accountability

mechanical/technical performance

unreliabilityreliability

Consistent, predictable performance

dependability · durability · robustness · stability · soundness

Family

reliable, rely, reliance, unreliable, reliability, reliably, reliant, relying, relies

Familiarity
Top 100,000
Profile
Used worldwide · Timeless · Abstract · Negative · Everyday, not technical · Rated G