The idiom "rotten to the core" means that something or someone is completely bad or corrupt, with no redeeming qualities. It implies that the negative qualities go all the way through to the center or core of the thing or person.
For example, if someone says "that politician is rotten to the core," they mean that the politician is completely corrupt and cannot be trusted. Similarly, if someone says "that apple is rotten to the core," they mean that the apple is completely spoiled and cannot be eaten.
This idiom is usually used to describe people or things that have a long history of bad behavior or actions. It can also be used to describe situations or systems that are fundamentally flawed or corrupt.
Overall, "rotten to the core" is a strong and negative phrase that should be used carefully and only when the situation truly warrants it.
• The politician's corruption was exposed, revealing that the entire system was rotten to the core.
• The novel's protagonist was a twisted character, rotten to the core, who manipulated and deceived everyone around him for his own gain.
• The scandalous behavior of the CEO showed that the company's culture was rotten to the core.
• The investigation uncovered that the police department was rotten to the core, with officers accepting bribes and engaging in illegal activities.
• The company's management was rotten to the core, leading to its downfall.
• The apple I bought yesterday was rotten to the core.