invalid (B1)

adjective

Pronunciation: /ɪnˈvælɪd/

Definition

Not valid; unacceptable or legally or officially unacceptable.

Examples

• The referee ruled the goal invalid due to an offside call.

• His argument was invalid because it was based on false premises.

• The software rejected the password, stating it was invalid.

How to Use invalid

invalid argument (collocation)

A line of reasoning that is logically flawed. — "The politician's speech was full of invalid arguments."

invalid input (collocation)

Data entered into a computer system that does not meet the required format or constraints. — "Please check the form for any invalid input before submitting."

Synonyms of invalid

Words with a similar meaning to invalid:

• incorrect
• unacceptable
• erroneous
• unsound

Antonyms of invalid

Words with the opposite meaning to invalid:

• valid
• sound

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