Sour: meaning, definitions and examples

Often used to describe the taste of fermented or spoiled food, or anything that has an acidic taste, such as lemons or vinegar. It can also describe someone's personality if they are always in a bad mood.

• The milk has gone sour
• She gave me a sour look

Usually refers to a sharp but pleasant taste, often with a hint of sweetness, commonly used for fruits like apples or certain desserts.

• The tart flavor of the cranberries was refreshing
• She enjoyed a slice of tart apple pie

Commonly used in scientific contexts or to describe foods and drinks that have a low pH and can cause a sharp taste due to high acidity levels.

• Oranges can be quite acidic
• Acidic soil can harm some plants

Typically describes a strong, often unpleasant taste that is the opposite of sweet. It can also describe feelings of deep resentment or harshness.

• The coffee was very bitter
• He felt bitter after losing the championship

Used to describe a sensation or taste that is intense or piercing. It can relate to both physical sensations and flavors, often overlapping with sourness or bitterness.

• The cheese had a sharp flavor
• He felt a sharp pain in his ankle

Indicates a lasting state of unhappiness or bitterness, often resulting from a particular event.

• Their relationship turned sour after the argument.
• The negotiations went sour when both parties couldn't agree on the terms.

Describes someone who is habitually irritable and complaining.

• Don't mind her morning grumblings; she's always a grouch before her coffee.
• The neighbor is a real grouch, always finding something to complain about.

Often used to describe someone who is temporarily in a bad mood or irritable.

• He's a real grump after a long day at work.
• Stop being such a grump and enjoy the party!

Refers to an old, cranky person who is often in a bad mood; sometimes used endearingly.

• My grandfather can be a bit of a curmudgeon, especially when his routine is disrupted.
• The old curmudgeon at the end of the street rarely speaks to anyone.

Used for someone who ruins the fun or enjoyment of others, often by being overly critical or negative.

• Don't be a killjoy! Let everyone have fun.
• Her constant complaints about the music made her a killjoy at the party.