___ and void (4 letters)

{ Answer }

NULL

{ Related Clues }

Aleph-___
Invalid
Nonexistent
Valueless
Void
Zero
Empty, in math
Lacking value
Legally invalid
Of no effect
Not binding
Not valid
Partner of void
Void's partner
Without value
Empty, as a math set
Lacking any elements
No longer legal

{ Tags }

aleph, any, binding, elements, empty, invalid, lacking, legal, longer, math, no, nonexistent, not, null, partner, set, value, valueless, void, voids, zero

{ Notes }

The answer NULL is common and appears about once every 275 puzzles.

{ Definition }

NULL as a noun:

1. (nothing, nil, nix, nada, null, aught, cipher, cypher, goose egg, naught, zero, zilch, zip, zippo) = a quantity of no importance; "it looked like nothing I had ever seen before"; "reduced to nil all the work we had done"; "we racked up a pathetic goose egg"; "it was all for naught"; "I didn't hear zilch about it"

NULL as an adjective:

1. (null, void) = lacking any legal or binding force; "null and void"