1. having an unpleasant smell or taste because of being old and no longer fresh
Usage: especially used for fats, oils, or butter
2. extremely unpleasant or offensive
Usage: figurative use

Examples

• The butter had turned rancid after sitting in the heat.
• She threw away the rancid cooking oil.
• The smell of rancid meat filled the kitchen.
• His rancid breath made conversation difficult.
• The politician’s rancid remarks offended many voters.
• We had to dispose of the rancid leftovers.
• The rancid odor lingered in the refrigerator.