Expeditious (adjective)

1. Performing or taking action with speed and efficiency.
2. characterized by or acting with celerity; fast.

Origin:

From latin expedire, from ex- "out" + pes, ped- "foot".

Examples:

1. The company promised an expeditious resolution to the problem.
2. The lawyer was expeditious in handling the case.
3. The doctors took expeditious action to save the patient's life.
4. The company's new system is more expeditious than the old one.
5. The government promised an expeditious end to the conflict.