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
hard to understand; incomprehensible; unintelligible
hard to understand; incomprehensible; unintelligible
difficult to hear; indistinct; hesitating to ask; awkward to ask; unpleasant to hear; painful to listen to
hard-to-do; difficult; tough; awkward; tricky
difficult to approach; inaccessible
awkward (difficult) question
difficult (to obtain, receive permission, access, etc.); tough (to do, etc.)
can't occur easily; difficult to happen