The Clue
Caustic substance (4 letter answer)
The Answer
ACID
Tags
Notes
The answer ACID is seen frequently, appearing about once every 70 puzzles.
Related Clues
Amino ___
Biting
Boric ___
Carbolic ___
Caustic
Corrosive
Lsd
Mordant
Nitric ___
___ reflux
Sarcastic
Sour
Tart
Vicious
Vitriolic
Aspirin, e.g.
Certain test
Etcher's need
Etcher's purchase
Kind of rock
Kind of test
LSD, e.g.
Niacin, e.g.
Nitric or boric
Part of DNA
Part of RNA
Type of rain
Type of test
Cause of much bellyaching?
Kind of rain or test
Like gastric juice
Like some rain
Low-pH compound
More than sarcastic
Word with rock or rain
It was dropped in the '60s
This turns litmus red
Timothy Leary dropped it
Definition
ACID as a noun:
1. any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt
2. (acid, back breaker, battery-acid, dose, dot, Elvis, loony toons, Lucy in the sky with diamonds, pane, superman, window pane, Zen) = street name for lysergic acid diethylamide
ACID as an adjective:
1. (acerb, acerbic, acid, acrid, bitter, blistering, caustic, sulfurous, sulphurous, venomous, virulent, vitriolic) = harsh or corrosive in tone; "an acerbic tone piercing otherwise flowery prose"; "a barrage of acid comments"; "her acrid remarks make her many enemies"; "bitter words"; "blistering criticism"; "caustic jokes about political assassination, talk-show hosts and medical ethics"; "a sulfurous denunciation"; "a vitriolic critique"
2. (acidic, acid, acidulent, acidulous) = being sour to the taste
3. having the characteristics of an acid; "an acid reaction"