Sour, fermented, or off smell
Mold on the rind or cut surface
Slimy or sticky texture
Soft, mushy, or collapsing spots
Dark, sunken, or leaking areas
Discolored flesh that looks brown, gray, or dull
Visible cracks, splits, or severe bruising
Watery, mushy, or overly soft flesh
Seeds or cavity area that looks moldy or slimy
Bitter, sour, or unpleasant taste
Gas, swelling, or leaking from a cut container
Past its prime with an overly soft rind and weak aroma