Noun

(en noun)

(obsolete) A defect or failing; moral or spiritual degeneracy.

*

, title=(The Celebrity), chapter=1 , passage=In the old days, to my commonplace and unobserving mind, he gave no evidences of genius whatsoever. He never read me any of his manuscripts, […], and therefore my lack of detection of his promise may in some degree be pardoned.}}

A deficiency or need (of something desirable or necessary); an absence, want.

* Shakespeare

Let his lack of years be no impediment.

* 1994 , (Green Day),

I went to a shrink, to analyze my dreams. He said it's lack of sex that's bringing me down.''

* {{quote-news, year=2012, date=September 7, author=Phil McNulty, work=BBC Sport

, title= Moldova 0-5 England , passage=If Moldova harboured even the slightest hopes of pulling off a comeback that would have bordered on miraculous given their lack of quality, they were snuffed out 13 minutes before the break when Oxlade-Chamberlain picked his way through midfield before releasing Defoe for a finish that should have been dealt with more convincingly by Namasco at his near post.}}

Noun

(en noun)

A non-existent or empty value or set of values.

Zero]] quantity of [[expression, expressions; nothing.

(Francis Bacon)

Something that has no force or meaning.

(computing) the ASCII or Unicode character (), represented by a zero value, that indicates no character and is sometimes used as a string terminator.

(computing) the attribute of an entity that has no valid value.

Since no date of birth was entered for the patient, his age is null .

One of the beads in nulled work.

(statistics) null hypothesis