Related Clues:

• See 89-Across
• Timothy Leary dropped it
• Breakdown cause
• Citric __
• Sharp, like wit
• Like many a nasty remark
• "Maalox moment" cause
• Slyly derogatory
• A kind of test
• Base's opposite
• Amino or hydrochloric
• Word before rain or rock
• Like a catty remark
• Amino, boric or citric
• 60-Down, slangily