fruitless

Từ điển Oxford Advanced Learner 8th

fruit·less [fruitless fruitlessly] BrE [ˈfruːtləs] NAmE [ˈfruːtləs] adjective
producing no useful results
Syn: ↑unproductive
•a fruitless attempt/search
•Our efforts to persuade her proved fruitless.
Opp: ↑fruitful
Derived Word: ↑fruitlessly

Example Bank:
•All the signs were that this was going to be a fruitless exercise.
•He abandoned his fruitless attempts to get his poems published.
•He returned home after weeks of fruitless negotiations.
•The search proved fruitless.
•They were three weeks into an apparently fruitless investigation.

• Từ đồng nghĩa / Synonyms:
  bootless, futile, sleeveless, vain