The British Idiom – Sick as a dog
Definition of Sick as a dog
To be sick as a dog is to be extremely ill indeed.
Examples of Usage of Sick as a dog
I once spent four hours in the back of a Hercules with two trainee pilots at the controls. To say that I was sick as a dog would be the understatement of the century. I couldn’t gone a fair ride if you paid me. Even the gentlest ride for the smallest of children would leave me feeling sick as a dog.
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