taskmaster
/ˈtɑːskmɑːstə
/noun (feminine taskmistress /ˈtɑːskmɪstrɪs/)
A person who imposes a harsh or onerous workload on someone: he was a hard taskmaster...
- He went to train in Paris, Belgium and Scotland under harsh taskmasters.
- Martin, the course director, is something of a harsh taskmaster when he wants to be.
- I appreciated the counselling of compassion and acceptance, since my tendency is to be a harsh taskmistress.