1successful, and working in the way that was intendedOPP ineffective: The cheaper drugs are just as effective in treating arthritis. the painting’s highly effective use of colour Training is often much less effective than expected. the most effective ways of reducing inner city congestion► see thesaurus at
successful
RegisterIn everyday English, people usually say that something works (well), rather than say that it is effective:· The cheaper drugs work just as well.2[no comparative, not before noun] if a law, agreement, or system becomes effective, it officially startseffective from The cut in interest rates is effective from Monday.3[no comparative, only before noun] real rather than what is officially intended or generally believed: The rebels are in effective control of the city.—effectiveness noun [uncountable]COLLOCATIONSadverbsextremely/highly effective· The company launched a highly effective advertising campaign.nounsan effective way· What’s the most effective way to control crime?an effective method· Exams are not the most effective method of assessing students’ abilities.an effective means· Is reducing the speed limit an effective means of reducing accidents?effective action· The police must take effective action to protect the public.an effective solution· The most effective solution to traffic congestion is to build more roads.an effective treatment· Antibiotics are still the most effective treatment for this disease.an effective system· The country has a simple but effective welfare system.
WDF
effectiveness
[ɪˌfek'tɪvnɪs]
TOEFL
n3569
9707
465
77
1341
791
7033
NOUN3774
286307
Spoken:
16554669
有效性(86%)，效力(14%)
n.效力
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