1. Concerning a person who feels or shows a lack of forbearance; feeling or displaying annoyance because of delay; opposition; agitation: Mr. Black was quite irritable and impatient at the restaurant because he had to wait so long for his dinner to arrive.
2. Regarding an individual who shows restless eagerness to do something, go somewhere; overzealous, hasty: Little Ivy was so impatient to go see her grandmother in Germany that she packed her bag a month before leaving home!
3. Descriptive of someone who lacks endurance; irritable, irascible, easily provoked: Greg was sick with the flu and was so impatient to get well again that he became very snappy and exasperated with his parents for keeping him in bed so long!