void

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null and void

Cliché without legal force; having no legal effect. The court declared the law to be null and void. The millionaire's will was null and void because it was unsigned.
See also: and, void

fill the void

also fill a void
to replace or provide something necessary It is impossible to fill the void left by my sister's death.
See also: fill, void

fill a/the void

to replace something important that you have lost, or to provide something important that you need The country needs a strong leader to help fill the void left by the death of the president. Religion helped me fill a void in my life.
See also: fill, void

null and void

Canceled, invalid, as in The lease is now null and void. This phrase is actually redundant, since null means "void," that is, "ineffective." It was first recorded in 1669.
See also: and, void