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invalid
UK
/ɪnˈvæl.ɪd/
US
/ɪnˈvæl.ɪd/
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Compare the noun and adjective meanings of “invalid,” including their different stress and pronunciation.
Explain what “invalid” means in “The contract was declared invalid” and “invalid input.”
Discuss why “invalid” for a person may sound outdated or insensitive, and suggest respectful alternatives.
Give useful collocations with the adjective “invalid,” such as “invalid contract” and “invalid password.”
Compare “invalid” with “illegal,” “incorrect,” and “unacceptable” in different contexts.
Write five B2-level examples using “invalid” as an adjective and translate them into Russian.
Create a short quiz to test the difference between the noun and adjective forms of “invalid.”
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