feat, effort, exploit -- (a notable achievement; "he performed a great feat"; "the book was her finest effort")
Overview of verb exploit
The verb exploit has 3 senses
exploit, work -- (use or manipulate to one's advantage; "He exploit the new taxation system"; "She knows how to work the system"; "he works his parents for sympathy")
exploit, tap -- (draw from; make good use of; "we must exploit the resources we are given wisely")
overwork, exploit -- (work excessively hard; "he is exploiting the students")