The most common and most likely answer to this crossword clue is the 5 letter word ANNUL which also is the latest solution we found used in USA Today in 2011.
Invalidate legally crossword clue answers
Here's a list of possible crossword answers ranked by the most likely to least likely.
| Answer | Likelyness | Letters | 
|---|---|---|
| ANNUL | 100 % | 5 | 
Words with a meaning similar to the clue: Invalidate legally
These words may or may not be a possible solution to this crosswords clue.- annul
 - null
 - nullified
 - nullify
 - repeal
 - stultify
 - void
 - abrogate
 - avoid
 - avoiding
 - break
 - defend
 
Crossword Answer definitions
ANNUL verb- To formally revoke the validity of.
 - To dissolve (a marital union) on the grounds that it is not valid.
 
More crossword clues leading to the same solutions
Here's a few more crossword clues - all leading to the identical solution