discouraging - depriving of confidence or hope or enthusiasm and hence often deterring action; "where never is heard a discouraging word"

pessimistic - expecting the worst in this worst of all possible worlds

impossible - not capable of occurring or being accomplished or dealt with; "an impossible dream"; "an impossible situation"

unskilled - not having or showing or requiring special skill or proficiency; "unskilled in the art of rhetoric"; "an enthusiastic but unskillful mountain climber"; "unskilled labor"; "workers in unskilled occupations are finding fewer and fewer job opportunities"; "unskilled workmanship"

impossible - not capable of occurring or being accomplished or dealt with; "an impossible dream"; "an impossible situation"

colloquialism - a colloquial expression; characteristic of spoken or written communication that seeks to imitate informal speech

bad - having undesirable or negative qualities; "a bad report card"; "his sloppy appearance made a bad impression"; "a bad little boy"; "clothes in bad shape"; "a bad cut"; "bad luck"; "the news was very bad"; "the reviews were bad"; "the pay is bad"; "it was a bad light for reading"; "the movie was a bad choice"