Final answer:
A "constructive" condition in contract law refers to a provision commonly found in construction contracts, stating that the condition of complete performance may be excused if the party has rendered substantial performance.
Step-by-step explanation:
A "constructive" condition in contract law refers to a provision that is commonly found in construction contracts. It states that the condition of complete performance may be excused if the party has rendered substantial performance. This means that if a party has put forth a substantial effort to fulfill their obligations under the contract, even if they have not achieved complete performance, they may still be considered to have met the condition of the contract.