IMPATIENCE

[noun] [U] - annoyance and dissatisfaction at faults or because something is slow, or anxious eagerness to do somethingThere's a growing impatience among the electorate with the old two-party system."Well, I have shown you how to do this before," she said, unable to disguise her impatience.He was already half an hour late which explains his impatience to leave. [+ to infinitive]