efficacious
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/ˌefɪˈkeɪʃəs/
ef · fi · ca · cious
ˌef · ɪ · ˈkeɪ · ʃəs
English Definition
adj. effective; successful; potent
Significado en Español
eficaz, efectivo
Nghĩa Tiếng Việt
hiệu quả, có tác dụng
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Memory Aid / 记忆技巧
ef-(out) + fic(do) + acious→ effective, having an effect.
Know this word? Mark it mastered, or move on.
Practice — Synonym (ISEE Verbal)
Select the word that is the closest synonym for “efficacious”: The new policy implemented by the school board proved to be highly efficacious in improving student attendance rates.
A
ineffective
B
useless
C
effective
D
harmful
Show answer
C — effective.
“efficacious” means adj. effective; successful; potent
Common questions about “efficacious”
What does “efficacious” mean?
efficacious — adj. effective; successful; potent. In Chinese: 有效的，奏效的.
How do you pronounce “efficacious”?
efficacious is pronounced /ˌefɪˈkeɪʃəs/. It breaks into 4 syllables: ef · fi · ca · cious.
Is “efficacious” an ISEE Upper-level word?
Yes. efficacious appears on the iSEE Vocab Upper list, which covers 804 words for the ISEE and SSAT.
How can I remember “efficacious”?
ef-(out) + fic(do) + acious→ effective, having an effect.
