| LSD, colloquially | 17 |
| Low-pH chemical | 15 |
| Litmus test result | 18 |
| Like gastric juice | 18 |
| Lawn liming target | 18 |
| Kind of wit or test | 19 |
| It's not basic | 18 |
| It'll make you see things | 29 |
| Hydrochloric, for one | 21 |
| Hydrochloric ___ | 16 |
| Folic ___ | 9 |
| Extremely sharp | 15 |
| Etcher's purchase, perhaps | 30 |
| Etcher's material | 21 |
| DNA component? | 14 |
| Compound with a low pH | 22 |
| Citric ___ | 10 |
| Certain test | 12 |
| Cause of some bellyaching | 25 |
| Carbolic and sulphuric ender | 28 |
| Car battery component | 21 |
| Biting, as wit | 14 |
| Battery stuff | 13 |
| Battery or folic | 16 |
| Battery liquid | 14 |
| Base's counterpart | 22 |
| Amino, for one | 14 |
| Amino, boric or citric | 22 |
| Amino or citric | 15 |
| Amino or boric | 14 |
| ___-washed jeans | 16 |
| ___ test | 8 |
| __ rock | 7 |
| __ rain | 7 |
| Zantac target | 13 |
| You might drop it | 17 |
| Word with test or rain | 22 |
| Word with sulfuric or hydrochloric | 34 |
| Word with rock, rain or test | 28 |
| Word with rock and salt | 23 |
| Word with rock | 14 |
| Word with "rain" or "test" | 46 |
| Word before rain or test | 24 |
| Word before rain or rock | 24 |
| What lemon adds to a dish, in food lingo | 40 |
| What lawn liming reduces | 24 |
| What alkali neutralizes | 23 |
| Vinegar, essentially | 20 |
| Users drop it | 13 |
| Type of rock or rain | 20 |
| Trip mechanism? | 15 |
| Tina Turner "___ Queen" | 33 |
| Timothy Leary dropped it | 24 |
| This can be dropped | 19 |
| The "A" in RNA | 24 |
| The ''A'' in DNA | 32 |
| Test variety | 12 |
| Test or rock lead-in | 20 |
| Tart on the tongue | 18 |
| Target of milk of magnesia | 26 |
| Tannic or boric, e.g. | 21 |
| Sulphuric or nitric | 19 |
| Sulfuric, for one | 17 |
| Sulfuric substance | 18 |
| Sulfuric or hydrochloric follower | 33 |
| Sulfuric or carbolic substance | 30 |
| Sulfuric ___ | 12 |
| Substance with a low pH | 23 |
| Substance for etching | 21 |
| Subject of some 1960s CIA research | 34 |
| Stomach product | 15 |
| Sour; biting | 12 |
| Sour-tasting substance | 22 |
| Sour compound | 13 |
| Some take it for trips | 22 |
| Silicic ___ | 11 |
| Sharp, like wit | 15 |
| Sharp and biting | 16 |
| Scathing, as criticism | 22 |
| Salicyclic for one | 19 |
| Reflux cause | 12 |
| Rain pollutant | 14 |
| Psychedelic show drug | 21 |
| Pectic, e.g. | 12 |
| Part of the drug scene | 22 |
| One kind of rain | 16 |
| Nitric or boric | 15 |
| Nitric ___ | 10 |
| Niacin is one | 13 |
| Nasty, as a comment | 19 |
| More than sarcastic | 19 |
| Mordant for Durer or Hogarth | 28 |
| Lysergic, for one | 18 |
| LSD, familiarly | 15 |
| Low-pH stuff | 12 |
| Low pH | 6 |
| Litmus-reddening substance | 26 |
| Litmus-paper reactant | 21 |
| Liquid that can eat through metal | 33 |
| Liquid that burns | 17 |