Unreliable

Not able to be trusted or depended on; not consistently good in quality or performance. Unreliable describes something or someone prone to failure, inaccuracy, or inconsistency.

It suggests a lack of dependability, making it risky to base decisions or plans upon. It can refer to people who frequently break promises or fail to meet expectations, systems or equipment that often malfunction, or information that is not accurate or verifiable.

The core essence of unreliability is its association with a lack of predictability and trustworthiness.

Unreliable meaning with examples

• The old car was notoriously unreliable; it would often break down without warning, leaving me stranded on the side of the road, making my daily commute a stressful gamble.
• Witness testimony was deemed Unreliable because the person had a clear bias and history of embellishing stories, making it difficult for the jury to trust their account of events.
• The weather forecast has been incredibly Unreliable this week; yesterday, they predicted sunshine, and it poured rain all day, ruining our picnic plans.
• I hate depending on Unreliable sources of information; this website is known for spreading misinformation and conspiracy theories, so I take everything with a grain of salt.