wearisome (adj.)

• aggravating
• annoying
• arduous
• backbreaking
• black
• bleak
• boring
• bothersome
• burdensome
• crushing
• dark
• dismal
• disturbing
• draining
• drear
• dreary
• effortful
• exasperating
• exhausting
• forced
• funereal
• galling
• gloomy
• grave
• gray
• grim
• grueling
• hard-fought
• heavy
• hefty
• importunate
• irksome
• irritating
• killing
• labored
• laborious
• onerous
• operose
• oppressive
• painful
• pesky
• pestering
• pestiferous
• pestilent
• pestilential
• plaguey
• provoking
• punishing
• saturnine
• solemn
• somber
• strained
• straining
• strenuous
• stressful
• teasing
• tiresome
• tiring
• toilsome
• tough
• troublesome
• troubling
• trying
• uphill
• vexatious
• vexing
• wearing
• weary
• wearying
• worrisome
• worrying