Quiz: What comes out of a suppurating wound? More precisely, how do you spell it?

PUS.

P-U-S.

Not P-U-S-S.

Two Ses mean a cat, while one S means purulent liquid indicated an infected wound. [It’s also that white gunk inside zits.] Stop confusing them, people.

And for God’s sakes, don’t ever think that the adjectival form is "pussy," because that gets us into even more disgusting confusions. Acceptable adjectives meaning "full of pus" include suppurative, pyogenic and purulent.