| |||
| eficiente; efectivo; sin efecto; ineficaz | |||
|
efficiente : 57 phrases in 14 subjects |
| Communications | 4 |
| Economics | 5 |
| Electronics | 2 |
| Energy industry | 12 |
| Environment | 8 |
| Finances | 5 |
| General | 2 |
| Information technology | 2 |
| Law | 1 |
| Mathematics | 3 |
| Obsolete / dated | 1 |
| Research and development | 2 |
| Statistics | 9 |
| Transport | 1 |