What does "efficient" mean in simple words?

Efficient in simple words means able to do a job well without wasting time, energy, or money, working in a smart and quick way that gets good results. If a person is efficient, they finish tasks quickly and correctly without extra effort, for example an efficient worker might organize their tools so they can find everything fast and complete work in half the time. If a machine is efficient, it uses less fuel or electricity to do the same job, for example an efficient refrigerator keeps food cold using less electricity than an old wasteful one. An efficient car travels farther on less gasoline. In everyday life, being efficient means not wasting, planning ahead, avoiding unnecessary steps, and using resources wisely. For instance, making a shopping list before going to the store is more efficient than wandering aisles and forgetting items. An efficient process is one that achieves the desired outcome with minimum waste, minimum cost, and minimum time while maintaining quality. So in simplest terms, efficient means doing more with less, working smarter not harder, and getting the best result with the least waste.