Last seen in:
- Thomas Joseph - King Feature Syndicate - Jul 22 2023
- Thomas Joseph - King Feature Syndicate - Apr 16 2021
- Universal - Nov 26 2020
- The Washington Post - May 1 2020
- L.A. Times Daily - May 1 2020
- Thomas Joseph - King Feature Syndicate - Jan 17 2020
- Newsday.com - Feb 15 2015
- Eugene Sheffer - King Feature Syndicate - Oct 15 2014
- Thomas Joseph - King Feature Syndicate - Sep 13 2014
- USA Today - Dec 14 2013
Related Clues:
- Caustic compound
- Hydrofluoric ___
- It's dropped for kicks
- Liver product
- Burn cause
- Hydrochloric or amino, e.g.
- Pavlov's dogs produced it
- Etcher's purchase, perhaps
- Part of DNA
- 91-Across, e.g.
- Etcher's purchase
- Catalyst in yeast, for one
- Low pH
- It may cause a breakdown
- Sulfuric or hydrochloric follower