Having the qualities of an acid; sour or containing acid.
Informal adjective from English 'acid' with the suffix '-y,' used colloquially since at least the 1800s. Less formal than 'acidic' or 'acidulous,' often used in casual speech.
Your stomach's acidy environment is actually a feature, not a bug—that powerful acid denatures proteins and kills most bacteria, making digestion possible and food safe!
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