Related Clues:

• Low pH
• Like orange juice, say
• Like vinegar
• Like fluid in a battery
• Like vinegar or grapefruit juice
• Scathing
• Like lemon juice
• With a low pH
• Like grapefruit juice
• Like apples and oranges
• Basic opposite
• Tart to the taste
• Like citrus juices
• Very harsh
• Like lemonade