A dead deer being pecked by vultures, remains partly eaten by other animals, that sort of rotten meat is called 'carrion'.

It's hot, so you'd better head back quickly. Mackerel goes off so fast that they coined 'fresh-looking rotten fish'.

Opening the refrigerator, I noticed the meat had spoiled.

Eggs tend to go bad in summer.

All the eggs went bad.

Tighten the lid so that it doesn't go bad.

Some eggs were good, but the others were bad.

Bad milk tastes sour.

The rotten apple injures its neighbors.

One rotten apple spoils the barrel.

He is a thoroughly dishonest character.

He is a thoroughly dishonest character.

He is rotten to the core.

He's got money to burn.

Some of the apples in the box were rotten.

Some of the apples in the box were rotten.

Milk goes bad quickly in hot weather.

Put the meat in the refrigerator, or it will rot.

The meat has gone bad.

The meat has gone bad.