Now insects that possess noxious attributes, and the same is true of other animals, usually have a conspicuous warning coloration which appeals to the eyes of enemies and helps them to remember more easily the cause of an unpleasant experience, helps in fact to establish a psychical association between a particular style of coloration and a nasty taste or a painful wound.
He'd protected her and made it clear anything that got near her would die a nasty death.
This is a nasty night, lad.
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He was a nasty son-of-a-bitch.
It's a nasty country all the same.
We Americans have a nasty habit of playing with our food - like a cat.
She had a nasty headache and groaned, touching her head.
That's a nasty word coming out of that pretty mouth.
She popped one of the water cubes into her mouth, head pulsing from a nasty hangover.