In a way that is helpful or useful, especially by providing positive suggestions or improvements. The team worked constructively to solve the problem, offering practical solutions and feedback.
By providing an explicit construction or procedure, rather than merely proving existence (mathematics, logic). The theorem was proven constructively by presenting an algorithm that generates the required sequence.
By legal interpretation or presumption rather than by actual fact; by a legal fiction (law). The court held that he was constructively present at the meeting for quorum purposes.