difficult to ...; hard to ...
hard to say; inexpressible; hesitant to say; embarrassing; delicate
difficult to imagine; quite unlikely to; very doubtful; would not expect
hard to understand; incomprehensible; unintelligible
unapproachable; inaccessible; difficult to access
hard to see; obscure; indistinct; illegible
difficult to hear; indistinct; hesitating to ask; awkward to ask; unpleasant to hear; painful to listen to
difficult to eat; unpalatable
hard-to-do; difficult; tough; awkward; tricky
inconvenient (residence); unpleasant (surroundings); difficult (to live in)
difficult to approach; inaccessible
difficult to write or draw; does not write well (pen, brush, etc.)
awkward (difficult) question
difficult (to obtain, receive permission, access, etc.); tough (to do, etc.)
can't occur easily; difficult to happen
difficult to make friends with
difficult to translate; untranslatable