Related Clues:

• Limelike
• Sort of remark
• Ill-natured
• Etching fluid
• Trip agent?
• One litmus test conclusion
• Caustic compound
• Hydrofluoric ___
• It's dropped for kicks
• Burn cause
• Hydrochloric or amino, e.g.
• Etcher's purchase, perhaps
• Slyly nasty, as a remark
• Part of DNA
• 91-Across, e.g.