What is what does substandard means?

Substandard means that something does not meet the expected quality or standard. It can refer to products, services, or anything else that falls below the acceptable level of performance or quality. Substandard items are often seen as inferior and may pose a risk to health, safety, or overall well-being. For example, if a building is deemed substandard, it may not be safe to live or work in, and if a food product is substandard, it may pose health hazards to consumers who consume it.