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All answers having "Delete" as clue:

3 Character Answers:

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CUT

TSK

ZAP



4 Character Answers:

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BLOT

EDIT

OMIT

UNDO

XOUT



5 Character Answers:

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ELIDE

ERASE

OTTER



6 Character Answers:

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CANCEL

CUTOUT

IGNORE

REMOVE

RUBOUT



7 Character Answers:

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EDITOUT

EXPUNGE

TAKEOUT



8 Character Answers:

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BLANKOUT

CROSSOFF

CROSSOUT



9 Character Answers:

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STRIKEOUT



11 Character Answers:

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COMPUTERKEY