1. the quality or state of being rancid; having an unpleasant smell or taste from being old or spoiled

Examples

• The rancidness of the old butter was immediately apparent when she opened the container.
• He detected the rancidness in the cooking oil and decided to throw it away.
• The rancidness of the nuts made them inedible.
• She wrinkled her nose at the rancidness coming from the expired milk.
• The chef emphasized the importance of proper storage to prevent rancidness in oils.
• The rancidness of the bacon grease had developed over several weeks.