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active; effective; effectual; efficacious (про ліки тощо); efficient; forcible; rash; valid; virtual; virtued; virtuous; impactful (Ladyolly); cost efficient (в плані витрат: producing optimum results for the expenditure • Outsourcing all the work you can is a cost efficient way of moving your business to the next level  collinsdictionary.com bojana) | |||
| operative | |||
| effective (Capable of producing successful results) | |||
| powerful | |||
| efficacious | |||
| effective and efficient | |||
| high-performance; useful | |||
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ефективна : 271 phrases in 34 subjects |