隔壁的老人当孩子们吵闹时总是脾气暴躁。

The old man next door is always ___grumpy when the kids make noise.

我们的导游在整个旅行中出奇地脾气暴躁且不乐于助人。

Our tour guide was surprisingly ___grumpy and unhelpful throughout the trip.

睡眠不足会让任何人感到脾气暴躁和易怒。

Lack of sleep can make anyone feel ___grumpy and irritable.