Purposive
Part of speech: adjective
Definition: Serving a particular purpose. Done or made with a conscious purpose. Pertaining to purpose. determined, resolute Of a clause or conjunction: expressing purpose.
Purposeful
Part of speech: adjective
Definition: Having purpose; intentional.Having a purpose in mind; resolute; determined.
Example sentence: When I first met Tony Blair in 1996, he was open and idealistic, keen to bring a breath of fresh air to government. But something happened - was it just the arrogance of power? - that narrowed Labour's vision from purposeful reform and investment, to peevish and petulant pragmatism.