|Use of physical or mental energy; hard work.|
He got an A for effort.
They managed only with great exertion.
|Earnest and conscientious activity intended to do or accomplish something.|
Made an effort to cover all the reading material.
Wished him luck in his endeavor.
She gave it a good try.
|A notable achievement.|
He performed a great feat.
The book was her finest effort.
|A series of actions advancing a principle or tending toward a particular end.|
He supported populist campaigns.
They worked in the cause of world peace.
The team was ready for a drive toward the pennant.
The movement to end slavery.
Contributed to the war effort.