Someone who directs and supervises workers
Miss Keller began to get the better of her old friendly taskmaster, the phrase.
He was a native of Berri, like herself, a stern but kindly taskmaster who treated her much as Dr Johnson treated Fanny Burney.
She no longer wanted a taskmaster – especially one who would leave his wife and children when things didn't suit him.
The soul, the higher self, is not a hard taskmaster.
Luke discovers Yoda is a tiny green troll, who can move mountains with his mind, and is a stern taskmaster.