efficacious

Word family

ef·fi·ca·cious /ˌefəˈkeɪʃəs◂/ adjectiveadj formal

EFFECTIVEworking in the way you intended 有效的 SYN effective

an equally efficacious method of treatment

同样有效的治疗方法

Examples from the Corpus

efficacious• Some found bathing the patient in a bath of nitric acid to be efficacious!• This, as almost always, proved efficacious.• If we did, we would be forced to choose between enormous guilt and efficacious action.• Areas where safeguards developed against the backdrop of a different type of decision-making may be more efficacious and apposite.• The cedar lining that once protected fine cigars from deteriorating is equally efficacious at preserving cardboard rectangles from insect damage.• He sees the present as the open door to an efficacious future.• On seeing the Muybridge article he must immediately have been convinced that photography was the most efficacious means of advancing his researches.• This suggests that improving access to dietitians might be more efficacious than other changes.• More efficacious treatments may soon be available.

Origin efficacious

(1500-1600) Latin efficax, from efficere; → EFFECT1

Chinese

Syllable

Corpus

BNC: 21836 COCA: 19391

efficacious