(Verily, man was created very impatient;) Then, Allah explains this statement by saying,
(Apprehensive when evil touches him;) meaning, whenever any harm touches him he is frightful, worried and completely taken back due to the severity of his terror and his despair that he will receive any good after it.
(And suppressive when good touches him.) meaning, if he attains any blessing from Allah, he is stingy with it, not sharing it with others. He will withhold the right of Allah with that blessing.)