grumous

It was as though we climbed down through some unseen, grumous fluid.

The sea was grumous, too.

The wound was a neat grumous slit in the low heavy forehead, so unremarkable that it could have been used for a forensic ballistics demonstration of the effect of discharge at six feet.

In the official investigation that followed it was established that one of the women he had been with that evening had suddenly been taken by violent abdominal pains, a feeling of urinary urgency and protracted vomiting of blackish, grumous stomach contents.