1. performing or functioning in the best possible manner with the least waste of time and effort; having and using requisite knowledge, skill, and industry; competent; capable: a reliable, efficient assistant.
2. satisfactory and economical to use: Our new air conditioner is more efficient than our old one.
3. producing an effect, as a cause; causative.
4. utilizing a particular commodity or product with the least waste of resources or effort (usually used in combination): a
"points can be efficient in things."
"businesses can be efficient in quarters."
"warlordses can be efficient at things."
"producers can be efficient in places."
"producers can be efficient in orders."
This list can help you learn new vocabulary more quickly and be able explore other words more easily.