Basic Details
Word: Efficacy
Part of Speech: Noun
Meaning: The ability to produce the desired result or effect.
Synonyms: Effectiveness, Efficiency, Potency
Antonyms: Ineffectiveness, Inefficiency
Idioms and Phrases
- Put to the test: To evaluate the effectiveness of something by trying it out. Example: "We need to put this new method to the test to see if it works."
- The proof is in the pudding: The real value or quality of something can only be judged from practical experience or results. Example: "Her training programme seemed promising, but the proof is in the pudding; we'll see the results after a few weeks."
Usage Examples
Example 1: The efficacy of this new medicine was confirmed by several clinical trials.
Example 2: Researchers are studying the efficacy of different teaching methods to help improve learning.
Example 3: While the efficacy of the new policy is still under review, many believe it will have a positive impact.
Fun Fact
The word "efficacy" originated from the Latin word "efficacia," which means 'effectiveness' or 'ability to accomplish a task.' Over time, it evolved into its current form in English, maintaining a similar meaning.
Famous Quote
"The efficacy of an idea lies in its ability to produce a result, not just in its theoretical beauty." - Unknown
Multiple Choice Questions (MCQs)
1. What does "efficacy" mean?
a) A feeling of sadness
b) The ability to produce the desired result
c) A type of activity
d) A measure of weight
Answer: b) The ability to produce the desired result
2. Which of these is a synonym of "efficacy"?
a) Ineffectiveness
b) Efficiency
c) Difficulty
d) Slow pace
Answer: b) Efficiency
3. Which word is an antonym of "efficacy"?
a) Effectiveness
b) Potency
c) Ineffectiveness
d) Efficiency
Answer: c) Ineffectiveness
4. Which sentence uses "efficacy" correctly?
a) The efficacy of the video game was impressive.
b) The efficacy of the training session helped everyone improve their skills.
c) The efficacy of the cake was delightful.
d) The efficacy of the movie was high entertainment.
Answer: b) The efficacy of the training session helped everyone improve their skills.
5. Which idiom is related to measuring effectiveness?
a) The proof is in the pudding
b) Jumping the gun
c) Crying over spilled milk
d) Bite the bullet
Answer: a) The proof is in the pudding
