A tedious routine is a job or task that is repetitive and dull. It can involve a lot of hard work and can be very draining. The two crossword solutions for this term are 'GRIND' and 'MONOTONY'. GRIND is a five letter word that means to work hard and laboriously, often with little reward. MONOTONY is an eight letter word that means a lack of variety and interest in a task or activity. Together, these words describe a tedious routine as one that is laborious, repetitive, and lacking in variety.