A diligent worker is someone who puts in a lot of effort and hard work into their job. An ANT is an insect that works tirelessly to build its nest and forage for food. A slogger is someone who works hard and persistently, often with little reward. A plier is someone who uses physical strength and skill to complete tasks. Finally, a studier is someone who puts in a lot of time and effort into researching and learning. All of these terms describe a diligent worker, someone who puts in a lot of effort and hard work into their job.