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most efficient

ADJECTIVE

adept, effective

Synonyms

STRONGEST

able active adequate capable competent decisive dynamic economical energetic potent powerful productive profitable skilled skillful tough useful valuable

WEAK

accomplished adapted apt businesslike clever conducive deft economic effectual efficacious equal to experienced expert familiar with fitted good at good for handy masterly organized practiced proficient qualified ready saving shrewd systematic talented virtuous well-organized

Antonyms

STRONGEST

delicate fragile idle impotent inactive inadequate incapable incompetent ineffective inept lazy sluggish unable unskilled unskillful useless weak worthless

WEAK

helpless inefficient powerless

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

For one, the most efficient miners can still produce bitcoin at costs in the low $60,000s, creating a potential fundamental floor.

From MarketWatch • Jun. 4, 2026

Nvidia’s stock climbs after the chip maker unveils RTX Spark, described as the most efficient PC chip ever built.

From Barron's • Jun. 1, 2026

She described it as the "most efficient fighting style that ever existed," and when it pays off like it did against Carano, there are not many who can argue with her.

From BBC • May 17, 2026

Previous F1 engines are considered some of the most efficient in the world; the 2026 engine is the premier of advance sustainable fuels for F1.

From The Wall Street Journal • May 1, 2026

Smooth air flowing around the wing means the plane can slip through the sky with minimum friction, the way the most efficient swimmers cut through the water.

From "Hidden Figures" by Margot Lee Shetterly