Related Clues:

• Rock subgenre
• ___-washed jeans
• Vinegar, for one
• Etcher's material
• Low-pH chemical
• Base neutralizers
• Tripper's drug
• You'll trip if you drop it
• They turn litmus paper red
• Hydrochloric, e.g.
• What lawn liming reduces
• Lab flask contents, perhaps
• Etchers' fluids
• Formic and folic
• Battery stuff