effort

(noun) earnest and conscientious activity intended to do or accomplish something. Synonyms: attempt, endeavor, endeavour, try. Examples: "Made an effort to cover all the reading material." "Wished him luck in his endeavor." "She gave it a good try."

(noun) use of physical or mental energy; hard work. Synonyms: elbow grease, exertion, travail, sweat. Examples: "He got an a for effort." "They managed only with great exertion."

(noun) a notable achievement. Synonyms: feat, exploit. Examples: "He performed a great feat." "The book was her finest effort."

(noun) a series of actions advancing a principle or tending toward a particular end. Synonyms: campaign, cause, crusade, drive, movement. Examples: "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."