Level 6 · word 17,754 of 20,000

efficacious

/ˌefəˈkeɪʃəs/ American
  • adj. 有效的, 灵验的
Definition
  • adj. producing the intended result or effect
Example
The new treatment proved efficacious against the common seasonal infection.
事实证明,这种新疗法对常见的季节性感染很有效。