definition of
hard

[1] #1 hard a. [difficult] not easy; requiring great physical or mental effort to accomplish or comprehend or endure; "a difficult task"; "nesting places on the cliffs are difficult of access"; "difficult times"; "why is it so hard for you to keep a secret?". wn

[2] #2 hard a. dispassionate; "took a hard look"; "a hard bargainer";. wn

[3] #3 hard a. resisting weight or pressure. wn

[4] #4 hard r. with effort or force or vigor; "the team played hard"; "worked hard all day"; "pressed hard on the lever"; "hit the ball hard"; "slammed the door hard". wn

[5] #5 hard s. [knockout, severe] very strong or vigorous; "strong winds"; "a hard left to the chin"; "a knockout punch"; "a severe blow". wn