difficult
词形变化：
同义词：
hard | rough | rugged | arduous | complicated | trying | tough | incomprehensible | laborious | puzzling | wicked | painful | ornery | troublesome | sticky | wretched | wayward | fussy | strenuous | stiff | formidable | exacting | tricky | thorny | problematic | grim | abstract | unintelligible | abstruse | impenetrable | involved | obstinate | stubborn | recalcitrant | intractable | unmanageable |
反义词：
词义辨析：
同义:
a.难的, 困难的
hard
rough
rugged
arduous
laborious
complicated
puzzling
同义参见:
wayward
wretched
formidable
trying
troublesome
sticky
strenuous
fussy
tough
ornery
incomprehensible
abstract1
wicked
painful
exacting
stiff
反义:
a.困难的; 不随和的
easy
simple
反义参见:
convenient