Null and void definitions

Null and void

1) Double space 2) Doubly invalid 3) Dull, vain don abused invalid 4) No longer valid
Found on https://www.crosswordclues.com/clue/null-and-void

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null and void

[Noun] With no legal force or meaning.
Example: As Tom hadn't signed the contract it was declared to be null and void.
Found on http://www.bbc.co.uk/skillswise/glossary/

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