Synonyms:
- Herculean,
- annoying,
- arduous,
- backbreaking,
- besetting,
- bothersome,
- burdensome,
- castigatory,
- chastening,
- chastising,
- corrective,
- crushing,
- devitalizing,
- disciplinary,
- draining,
- effortful,
- enervating,
- enfeebling,
- exhausting,
- fatiguesome,
- fatiguing,
- forced,
- hard-earned,
- hard-fought,
- heavy,
- hefty,
- inflictive,
- irksome,
- killing,
- labored,
- laborious,
- onerous,
- operose,
- oppressive,
- painful,
- penal,
- penological,
- plaguey,
- punishing,
- punitive,
- punitory,
- retributive,
- sapping,
- strained,
- straining,
- strenuous,
- stressful,
- tiresome,
- tiring,
- toilsome,
- tough,
- troublesome,
- trying,
- uphill,
- vexatious,
- weakening,
- weariful,
- wearing,
- wearisome,
- wearying