Effort

1.

(the use of physical or mental energy to achieve something, a try, attempt, a result of trying) ការខំប្រឹង, សេចក្ដីខិតខំ
Example: A waste of time and effort.

2.

(បច្ចេកទេស) ការខិតខំព្យាយាម, ការប៉ុនប៉ង

1.

An exertion of strength or power, whether physical or mental, in performing an act or aiming at an object; more or less strenuous endeavor; struggle directed to the accomplishment of an object; as, an effort to scale a wall.

2.

A force acting on a body in the direction of its motion.

1.

attempt, endeavor, essay, exertion, trial

2.

labor, pains, strain, strife, struggle, toll, trouble, undertaking

1.

To stimulate