What term describes a contract made by an insane person who has not been declared as such judicially?

The term that describes a contract made by an insane person who has not been declared as such judicially is "voidable." A voidable contract is one that may be enforced or voided at the discretion of one of the parties involved—in this instance, the insane person, who has the right to affirm or reject the contract. This is recognized because contracts typically require mutual consent, and mental incapacity can impede an individual's ability to fully understand and agree to the terms of a contract.

In the situation where someone has not been declared insane by a court, there may be grounds to question their capacity to contract, as their mental state might fluctuate, affecting their judgment. Therefore, such contracts can be considered valid until the party chooses to void them or until a court determines the individual's mental state.

Other terms, such as "valid," would imply that the contract is fully enforceable, which is not accurate given the mental capacity issue. Similarly, "enforceable" also suggests that the contract stands without this question of capacity, which does not apply here, as it is contingent on the mental condition of the person. The term "void" would denote that the contract has no legal effect from the beginning, which is also not fitting in this context,