☞ Difficult implies the notion that considerable mental effort or skill is required, or that obstacles are to be overcome which call for sagacity and skill in the agent; as, a difficult task; hard work is not always difficult work; a difficult operation in surgery; a difficult passage in an author.
There is not the strength or courage left me to venture into the wide, strange, and difficult world, alone.Hawthorne.
Syn. -- Arduous; painful; crabbed; perplexed; laborious; unaccommodating; troublesome. See Arduous.