noun
plural -forts
work done by the mind or body :energy used to do something [noncount]
If you get an A for effort or an E for effort or (Brit) full marks for effort, you are given credit for working hard to do something, even though the result of the work was not successful.
[count] :a serious attempt to do something
[count] :something produced by work
[singular] :something that is hard to do
[noncount] :all that is being done to achieve a particular goal