Related Clues:

• Detective stifled by a town's bitterness
• Identification required in a town generates sarcasm
• Nonbasic property
• Tart quality
• Sourness of detectives in island unknown
• Sour quality
• Bitterness of a tribe lost in deserted city
• Travelling by air, etc., out of bitterness, in a manner of speaking
• Sharpness, forthrightness
• One really gutted about taste — that's sourness
• Bitterness, sourness
• pH scale measurement
• Sharpness was effective cutting very fine line
• A European loses the head in Paris, for instance, out of bitterness, in a manner of speaking
• Sharpness, sourness