hard, difficult
難しい、 ムズい、 困難、 むずい、 難し、 難い
not easy
簡単でない
a difficult task
難しい仕事
nesting places on the cliffs are difficult of access
崖の営巣地は近づくのが難しい
difficult times
困難な時
why is it so hard for you to keep a secret?
なぜ秘密を守るのがそんなに難しいのか?
近似
ambitious, challenging, arduous, awkward, embarrassing, sticky, unenviable, problematical, elusive, tough, problematic, knotty, baffling, tricky, catchy, ticklish, delicate, touchy, fractious, hard-fought, herculean, tight, nasty, rocky, rough, rugged, serious, tall, thorny, troublesome, trying, vexed
difficult, unmanageable
気難しい
hard to control
なかなか抑えられない
a difficult child,
気難しい子供、
an unmanageable situation
手に余る状況