Like Something That's Been Turned to Acid, Vinegar
This page is the CodyCross answer for the clue below from House of Horrors, Group 1109, Puzzle 3 (Potions Room).
Question is: Like Something That's Been Turned to Acid, Vinegar
and the answer is: ACIDIFIED
Word Meaning:
ACIDIFIED — simple past and past participle of acidify
Definitions from Wiktionary.