Synonyms:
- Herculean,
- aggravating,
- annoying,
- arduous,
- backbreaking,
- black,
- bleak,
- boresome,
- boring,
- bothering,
- bothersome,
- burdensome,
- crushing,
- dark,
- dismal,
- disturbing,
- draining,
- drear,
- drearisome,
- dreary,
- effortful,
- exasperating,
- exhausting,
- fatiguesome,
- fatiguing,
- forced,
- funebrial,
- funereal,
- galling,
- gloomy,
- grave,
- gray,
- grim,
- grueling,
- harassing,
- hard-earned,
- hard-fought,
- heavy,
- hefty,
- importunate,
- importune,
- irking,
- irksome,
- irritating,
- killing,
- labored,
- laborious,
- onerous,
- operose,
- oppressive,
- painful,
- pesky,
- pestering,
- pestiferous,
- pestilent,
- pestilential,
- plaguesome,
- plaguey,
- plaguing,
- provoking,
- punishing,
- saturnine,
- solemn,
- somber,
- sombrous,
- strained,
- straining,
- strenuous,
- stressful,
- stupefyingly boring,
- stuporific,
- teasing,
- tiresome,
- tiring,
- toilsome,
- tormenting,
- tough,
- triste,
- troublesome,
- troubling,
- trying,
- uphill,
- vexatious,
- vexing,
- weariful,
- wearing,
- weary,
- wearying,
- worrisome,
- worrying,
- yawny