an attempt to do something especially when it is difficult to do

the physical or mental energy that you need to do something; something that takes a lot of energy

You should put more effort into your work.

A great deal of time and effort has gone into making this event a success.

It's a long climb to the top, but well worth the effort.

Getting up this morning was quite an effort .

The task required almost no effort.

(British English)With an effort she managed to stop herself laughing.

a particular activity that a group of people organize in order to achieve something

the United Nations’ peacekeeping effort

I'm afraid this essay is a poor effort.

a force applied by a machine or in a process

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