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# The Good Oil Word of the Day
- URL: https://goodoil.news/the-good-oil-word-of-the-day-28/
- Published: 2024-08-21T18:15:32.000Z
- Updated: 2024-08-21T18:15:33.000Z
- Author: David Theobald
- Tags: General, #wp, #wp-post, #Import 2024-07-20 04:39

The word for today is…

efficacious (adjective):

: having the power to produce a desired effect

Source : [Merriam -Webster](https://www.merriam-webster.com/dictionary/efficacious?ref=goodoil.news)

Etymology : Efficacious came to English from the Middle French word efficace (or that word’s Latin source, efficāc- or efficāx), meaning “effective.” (These words ultimately trace back to the Latin verb efficere, “to make, bring about, produce, carry out.”) English speakers added -ious to effectively create the word we know today. Efficacious is one of many, er, eff words that mean “producing or capable of producing a result.” Among its synonyms are the familiar adjectives effective and efficient. Efficacious is more formal than either of these; it’s often encountered in medical writing where it describes treatments, therapies, and drugs that produce their desired and intended effects in patients.

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