effectiveness
9 synonyms and 1 antonym for effectiveness, grouped by meaning and by how common each one is.
Noun — The degree to which something achieves the result it is meant to.
Synonyms
Everyday swaps
Common words most readers know — safe in any writing.
Less common
Still standard English, but they carry more weight.
Rare, literary or technical
Precise, but they will stand out — check the sense before using one.
Antonyms
ineffectiveness
How to use effectiveness
The word patterns that sound natural to a native speaker.
proven effectiveness
measure effectiveness
question the effectiveness
Etymology
Formed from effective plus the noun-forming suffix "-ness."
Full origin of effectiveness →Frequently asked questions
What does “effectiveness” mean?
The word “effectiveness” means the degree to which something achieves the result it is meant to. In plain terms, how well something actually works at doing what it's supposed to do.
How do you pronounce “effectiveness”?
“Effectiveness” is pronounced ih-FEHK-tihv-nihs (/ɪˈfɛk.tɪv.nɪs/ in IPA).
How do you use “effectiveness” in a sentence?
Here is “effectiveness” used in a sentence: “Studies measured the effectiveness of the new vaccine.”
What part of speech is “effectiveness”?
“Effectiveness” is a noun.
Is “effectiveness” a common word?
“Effectiveness” is a fairly common word in modern English, usually learned at around the B2 level.
What is the difference between effectiveness and efficiency?
Effectiveness is the degree to which something achieves the result it is meant to; efficiency is how little time, money, or effort it wastes in doing so. A treatment can be effective but inefficient — it works, but slowly and expensively — and a process can be efficient yet ineffective.
What is the difference between effectiveness and efficacy?
Efficacy is the power of something to produce its intended result under ideal or controlled conditions, such as a clinical trial. Effectiveness is the degree to which it achieves that result in real-world use, which is why a medicine's trial efficacy can be higher than its everyday effectiveness.
What is the adjective form of effectiveness?
The adjective is effective, meaning achieving the intended result, and the related adverb is effectively. Effectiveness is the noun that names the quality, as in "the effectiveness of the new policy."
