The kindest animal is you, Mother Kangaroo. Even when you were worried about your Joey, you were still kind to a grumpy complaining old wombat.

最善良的动物就是你，袋鼠妈妈。即使你在很担心你的乔伊的情况下，还是对一只爱发牢骚的坏脾气老袋熊这么好。

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Some folks think I'm a grumpy old man.

一些人认为我是个脾气很坏的老头儿。

《柯林斯英汉双解大词典》

But I can imagine that a grumpy co-worker would have an outsize impact on my mood.

但我可以想像，一个坏脾气的同事可能会对我的情绪造成巨大的影响。

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So there is a fear and I think that is what this change is tapping into, a grumpy,worried national audience that is very,very concerned that somehow when their lives are somewhat fragile, things are going to even erode or crack further,"

VOA: standard.2009.08.17

As a grumpy libertarian, I routinely get agitated about taxes, spending, and regulation.

FORBES: Stealing Is Wrong, Even When It's The Government Doing It

Though meant to sound decisive, the slap reminded some viewers of a grumpy grandpa asking when his Jell-O would be served.

NEWYORKER: Hack Work

As he got older he seemed to relish his new persona as a grumpy old man, particularly when it came to comedy.

BBC: Obituary: Richard Briers