common_idiom

UK//ðæts ə laɪ//US//ðæts ə laɪ//

Meaning of That's a lie

A statement that is not true or is a falsehood.

In simple words: It's not true.

That's a lie in a sentence

  • When he claimed he finished the project on time, I thought, 'That's a lie.'
  • She said she was at home all night, but I know that's a lie.

How to use That's a lie

Used to express disbelief or accusation. Avoid in formal contexts.

Grammar pattern

standalone greeting

Memory hint

Think of a detective saying 'That’s a lie!' while pointing at a suspect.

Related words

Collocations with That's a lie

  • tell a lie
  • caught in a lie
  • big lie

Synonyms for That's a lie

  • falsehood
  • untruth
  • deception
  • fabrication
  • falsity

Common mistakes with That's a lie

  • Use 'lies' instead of 'lie' when referring to multiple falsehoods.
  • Confuse with 'lying' which refers to the act of being in a horizontal position.

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Frequently asked questions about That's a lie

What does That's a lie mean?

It's not true.

What is the definition of That's a lie?

A statement that is not true or is a falsehood.

How do you use That's a lie in a sentence?

When he claimed he finished the project on time, I thought, 'That's a lie.'

Can you give another example of That's a lie?

She said she was at home all night, but I know that's a lie.

What are synonyms for That's a lie?

Common alternatives include falsehood, untruth, deception, fabrication, falsity.

What words go with That's a lie?

It commonly pairs with tell a lie, caught in a lie, big lie.

What are common mistakes when using That's a lie?

Use 'lies' instead of 'lie' when referring to multiple falsehoods. Confuse with 'lying' which refers to the act of being in a horizontal position.

How do you pronounce That's a lie?

US: //ðæts ə laɪ//, UK: //ðæts ə laɪ//. Listen to the audio above to hear native pronunciation.

When should I use That's a lie?

Used to express disbelief or accusation. Avoid in formal contexts.