troublesome (adjective) troublesome: bothersome, worrisome
Sinonime: alarming,
annoying,
arduous,
burdensome,
damaging,
dangerous,
demanding,
difficult, disquieting, harassing,
hard,
heavy, importunate,
inconvenient, infestive,
intractable,
irksome,
irritating,
laborious,
mean,
messy,
murder,
oppressive,
painful, pesky, pestiferous, pestilential,
problematic, refractory, repressive,
rough, taxing,
tiresome,
tough,
tricky, troublous,
trying,
ugly, ungovernable,
unruly, uphill,
upsetting,
vexatious, vexing, wearisome,
wicked, worrying
Antonime: easy,
helpful,
nice,
useful