effective

adjective

• 1successful in producing a desired or intended result:effective solutions to environmental problems
• (especially of a law or policy) operative:the agreements will be effective from November

• 2 [attributive] fulfilling a specified function in fact, though not formally acknowledged as such:the region did not come under effective Dutch control until 1904
• assessed according to actual rather than face value:an effective price of $176 million
• impressive; striking:an effective finale

noun

• a soldier fit and available for service.