acid
word
Definition
An acid is a chemical substance that can react with other substances and often has a sour taste or can burn materials. In everyday English, it can also describe something very sharp, harsh, or highly critical.
Usage & Nuances
Most commonly used in science and everyday phrases like 'acid rain', 'acid reflux', and 'acid test'. As an adjective, 'acid' can mean chemically acidic or, less commonly, sharply critical: 'an acid remark'. Do not confuse it with 'sour', which is more common for taste.
Example Sentences
Lemon juice is acid.
basic
Be careful with this acid in the lab.
basic
The factory caused acid rain in the area.
basic
I can't drink that on an empty stomach—it's too acid for me.
natural
Her review of the movie was so acid that everyone went quiet.
natural
That new cleaner is pretty acid, so wear gloves.
natural