Bing found the following results
Efficient Definition & Meaning - Merriam-Webster
EFFICIENT Synonyms: 75 Similar and Opposite Words - Merriam-Webster
EFFICIENT Definition & Meaning | Dictionary.com
EFFICIENT | English meaning - Cambridge Dictionary
Efficient - Definition, Meaning & Synonyms | Vocabulary.com
efficient adjective - Definition, pictures, pronunciation and usage ...
Efficiency Definition & Meaning - Merriam-Webster
efficient | meaning of efficient in Longman Dictionary of …
efficiency noun - Definition, pictures, pronunciation and usage …
efficient adjective - Definition, pictures, pronunciation and usage ...