efficacious
adjective
\
Definition of efficacious
Keep scrolling for more
Synonyms & Antonyms for efficacious
Synonyms
effective, effectual, efficient, fruitful, operative, potent, productive
Antonyms
fruitless, ineffective, ineffectual, inefficient, inoperative, unfruitful, unproductive, useless
Visit the Thesaurus for More
Examples of efficacious in a Sentence
Recent Examples on the Web
The associated novel regimen will hopefully provide a shorter, more easily manageable and highly efficacious treatment for those in need. — Beth Mole, Ars Technica, "How a new antibiotic destroys extremely drug-resistant tuberculosis," 16 Aug. 2019 In the past 20 years, this technology has proved efficacious. — Costas Synolakis, WSJ, "The Art of Predicting Unpredictable Tsunamis," 3 Oct. 2018 Skinfix has quite literally built its name on offering efficacious products that address a variety of skin concerns, including dryness and eczema. — Karina Hoshikawa, Allure, "Exclusive: Skinfix's Products Are Getting More Eco-Friendly Packaging — and Coming to Sephora," 19 Mar. 2019 The brand's Vitamin C Serum and D-Bronzi Serum are everything, and people swear by the line's efficacious yet gentle formulas. — Bella Cacciatore, Glamour, "Drunk Elephant's Vegan Retinol Doesn't Irritate My Sensitive Skin," 26 Dec. 2018 Fast forward to today, where advancements have made the aluminum salts in antiperspirants efficacious but mild, says Melissa Torres, manager for North America deodorants and antiperspirants at Degree. — Cassie Shortsleeve, Popular Mechanics, "How 5 Everyday Products Have Changed Through the Ages," 10 Dec. 2018 Sometimes expletives are just entertaining and efficacious, and this is particularly true for people in positions of power—which, by its very nature, has a way of conferring the Bad Mouthkeeping Seal of Approval on anything a person chooses to say. — Gully Wells, Town & Country, "Elegant Expletives: A Socialite's Guide to the F-Bomb," 7 Aug. 2014 What makes this product so efficacious is its combination of hydrating ingredients, which are extra strong because they're designed for the feet. — Rachel Jacoby Zoldan, SELF, "This Foot Cream Is Actually the Best Hand Cream of All Time," 12 Oct. 2018 Sephora: The cosmetics mecca is offering a sweet deal on their affordably priced but super efficacious in-house line, Sephora Collection. — Rachel Jacoby Zoldan, Glamour, "The Best Memorial Day 2018 Beauty Sales to Shop This Weekend," 23 May 2018These example sentences are selected automatically from various online news sources to reflect current usage of the word 'efficacious.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Keep scrolling for more
Keep scrolling for more
More Definitions for efficacious
efficacious
adjective
English Language Learners Definition of efficacious
See the full definition for efficacious in the English Language Learners Dictionary
Keep scrolling for more