| 1. | exertion of physical or mental power: It will take great effort to achieve victory. |
| 2. | an earnest or strenuous attempt: an effort to keep to the schedule. |
| 3. | something done by exertion or hard work: I thought it would be easy, but it was an effort. |
| 4. | an achievement, as in literature or art: The painting is one of his finest efforts. |
| 5. | the amount of exertion expended for a specified purpose: the war effort. |
| 6. | Chiefly British.
|
| 7. | Mechanics. the force or energy that is applied to a machine for the accomplishment of useful work. |

"Effort is only effort when it begins to hurt." [Ortega y Gasset, 1949]