acid

Having the chemical qualities of substances such as vinegar; stronger forms can damage skin or materials.

• These plants prefer acid soil.
• Acid rain can damage forests.
• The laboratory tested an acid solution.

Similar words: acidic

Opposites: alkaline

Common phrases: acid rain, acid soil, acid solution

Having a sharp, sour taste like lemon juice.

• The fruit has an acid taste.
• She disliked the acid flavour of the juice.
• These berries are too acid for me.

Similar words: sour, tart

Opposites: sweet

Common phrases: acid taste, acid flavour, acid fruit

Expressing anger or criticism in a sharp, hurtful way.

• He made an acid remark.
• Her acid reply ended the conversation.
• I was surprised by the acid tone of his letter.

Similar words: cutting, biting, sarcastic

Opposites: kind

Common phrases: acid comment, acid remark, acid reply

A chemical substance found in vinegar and lemons; some types can burn skin or damage materials.

• Lemon juice contains acid.
• Wear gloves when handling this strong acid.
• The scientist added an acid to the solution.

Opposites: base, alkali

Common phrases: stomach acid, battery acid, strong acid

A substance that tastes sour.

• The fruit contains a natural acid.
• A little acid balances the sweetness of the sauce.
• These acids give the juice its sharp taste.

Common phrases: fruit acid, natural acid, add acid