Definition

1. Adjective:
   • Having a strong, unpleasant smell or taste due to decomposition: Used primarily to describe fats, oils, or fatty foods (like butter, bacon, or nuts) that have spoiled through oxidation or bacterial action, resulting in a sharp, sour, or stale odor and flavor.
   • Stale or foul-smelling in a broader sense: Can describe anything that has an offensive, rotten smell reminiscent of spoiled fat.

Usage Examples

• Adjective:
  • The chef discarded the rancid butter because it had been left out too long.
  • A bag of old nuts had a distinctly rancid smell.
  • The kitchen was filled with the rancid odor of old cooking oil.

Advanced Usage

• Metaphorical Use: Can describe ideas, attitudes, or atmospheres that are perceived as stale, corrupt, or unpleasant.
  • The political debate was poisoned by the rancid rhetoric from both sides.
• "To turn/go rancid": A common phrase describing the process of becoming rancid.
  • Nuts with high fat content can go rancid quickly if not stored properly.

Variants and Related Words

• Rancidity (noun): The state or quality of being rancid.
  • The rancidity of the oil made it unsuitable for consumption.
• Rancidly (adverb): In a rancid manner.
  • The grease rancidly coated the forgotten pan.

Synonyms

• Spoiled: Having decayed or become unfit for use.
• Sour: Having an acid taste like that of fermentation.
• Putrid: Decaying and emitting a foul smell.
• Stale: No longer fresh and pleasant to eat or smell.
• Fetid: Smelling extremely unpleasant.

Antonyms

• Fresh: Newly made or obtained; not stale or spoiled.
• Sweet: Having the pleasant taste characteristic of sugar; not soured.
• Wholesome: Conducive to or suggestive of good health and physical well-being; fresh.

Related Phrases

• Rancid fat/oil: The specific substance that has spoiled.
  • Never cook with rancid oil, as it can be harmful.
• To smell rancid: To emit a rancid odor.
  • The leftovers in the container began to smell rancid.

Adjective

1. smelling of fermentation or staleness
2. (used of decomposing oils or fats) having a rank smell or taste usually due to a chemical change or decomposition
   • rancid butter
   • rancid bacon