a grumpy person. may or may express said grumpiness with non-human like grunts and sounds. definitely pouty and brooding.

Briefly, "the realization that each random passerby is living a life as vivid and complex as your own." Originally from the Dictionary of Obscure Sorrows, which has a lot more beautiful neologism definitions like this you might enjoy.

When someone gets tired and extremely grumpy

A dinosaur that is exceptionally grumpy, this term can be used to describe a woman when she is grumpy especially if she also looks like a dinosaur

A live-in partner or spouse, usually a wife, who is never happy in the morning. You will know her by the shrieks from frightened small children as they attempt to avoid her unquenchable fiery wrath by throwing the covers over their heads.