Other forms: taskmasters
A taskmaster is someone who makes you work very hard — maybe too hard. If your parents tell you and your siblings to shovel the driveway after a blizzard, even though it's freezing outside, they're definitely taskmasters.
Anyone who imposes a task, or job, might be described as a taskmaster. The term usually refers to someone who forces workers to do especially harsh tasks. In A Christmas Carol, Ebenezer Scrooge is a taskmaster who makes Bob Cratchett work late on Christmas Eve. And a soccer coach who pushes her players extra hard could also be described as a taskmaster. Dating from the 16th century, taskmaster comes from Latin roots meaning "labor" and "director."