ENGLISH
REFERENCE

effectiveness

n. uncountable
C1 Advanced Oxford US //ˈifɛktɪvnəs// UK //ɪfˈɛktɪvnəs// ef·fec·tive·ness

n. how well something works to produce the result you want. If a medicine has high effectiveness, it makes you feel better quickly.

n. the degree to which something is successful in producing a desired result; success in achieving a specific goal. Often used in professional or scientific contexts to measure performance.


SIMPLE

The doctor checked the effectiveness of the new medicine.

CONTEXTUAL

The marketing team is currently measuring the effectiveness of their social media campaign by tracking website traffic.

COMPLEX

While the policy was popular with the public, its long-term effectiveness remained a subject of intense debate among economists who questioned its impact on inflation.

Synonyms
Antonyms
Origin

From effective + -ness.

Usage

Frequently modified by adjectives like 'clinical', 'cost', or 'overall'.

Pitfall

the efficiency of the medicinethe effectiveness of the medicineLearners confuse 'effectiveness' (getting the right result) with 'efficiency' (doing something without wasting time or energy).

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