The state of being negligent.
The breach of a duty of care: the failure to exercise a standard of care that a reasonable person would have in a similar situation.
The tort whereby a duty of reasonable care was breached, causing damage: any conduct short of intentional or reckless action that falls below the legal standard for preventing unreasonable injury.
The state or quality of being perplexed; puzzled or confused.
Something that perplexes.
In information theory, a measurement of how well a probability distribution or model predicts a sample.