productive

https://tts.langeek.co/read?text=cHJvZHVjdGl2ZQ&hash=a55683460da8c9d5854f4c78c5cf328a0f8a44c3&lang=en&cache-only=0&driver=googletts

These adjectives express the degree to which something fulfills its intended purpose, optimizes resources, or achieves desired outcomes.