unilateral contract

Unilateral contract.

When there is a unilateral mistake, in what three types of situations may a contract not be enforced?

A unilateral promise in when just one of the parties to a contract agrees to do something. A bilateral promise is when both parties agree to perform under the contract.

Simply put- A unilateral contract can be modified or changed by one party and a bi-lateral must be agred upon and accepted by both contractual parties involved.