Crossword Genius

Declare invalid (5)

Ross

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annul

<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">declare invalid</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>

(Other definitions for annul that I've seen before include "Cancel officially" , "Invalidate" , "Countermand" , "Cancel, make void" , "Nullify" .)

I've seen this clue in The Irish Times, The Telegraph, the USA Today, The Wall Street Journal, The Times and The Guardian.
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