difficult
Cross references: 1. hard dif.fi.cult \'dif-i-(.)k*lt\ aj [back-formation fr. difficulty] 1: hard to do, make, or carry out : ARDUOUS {a ~ climb} 2a: hard to deal with, manage, or overcome {a ~ child} 2b: hard to understand : PUZZLING {~ reading} - dif.fi.cult.ly av