Nice  adj. 1 pleasant, satisfactory. 2 (of a person) kind, good-natured. 3 iron. Bad or awkward (nice mess). 4 fine or subtle (nice distinction). 5 fastidious; delicately sensitive. 6 (foll. By an adj., often with and) satisfactory in terms of the quality described (a nice long time; nice and warm).  nicely adv. Niceness n. Nicish adj. (also niceish). [originally = foolish, from latin nescius ignorant]