A more thorough explanation:

Nonfeasance is a legal term that means not doing something that you were supposed to do. It can refer to a failure to perform a required duty or a failure to act when there was a duty to act.

For example, in contract law, if someone fails to do what they promised to do in a contract, that is nonfeasance. This could lead to a lawsuit for breach of contract.

In the context of negligence, nonfeasance can occur when a landowner fails to warn people about dangerous conditions on their property. If someone is hurt because of this, the landowner could be held responsible for nonfeasance.

Nonfeasance is different from misfeasance and malfeasance, which refer to actions that are done improperly or wrongfully.