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Leer vs Undefined - What's the difference?

leer | undefined |

As a noun leer

is .

As an adjective undefined is

lacking a definition or value.

leer

English

Etymology 1

Exact development uncertain, but apparently from *. See below.

Verb

(en verb)
  • To look sideways or obliquely; now especially with sexual desire or malicious intent.
  • To entice with a leer or leers.
  • * (Dryden)
    • To gild a face with smiles; and leer a man to ruin.

    Noun

    (en noun)
  • A significant side glance; a glance expressive of some passion, as malignity, amorousness, etc.; a sly or lecherous look.
  • An arch or affected glance or cast of countenance.

    • Etymology 2

    From (etyl) ler, . More at (l), (l).

    Alternative forms

    * (l), (l), (l)

    Noun

    (en noun)
  • (obsolete) The cheek.
    • (Holinshed)
  • (obsolete) The face.
  • (obsolete) One's appearance; countenance.
  • * Shakespeare
    • a Rosalind of a better leer than you
  • (obsolete) Complexion; hue; blee; colour.
  • (obsolete) Flesh; skin.
  • The flank or loin.

    • Anagrams

    * *

    Etymology 3

    From (etyl) lere, from (etyl) . More at (l).

    Alternative forms

    * (l)

    Adjective

    (en adjective)
  • Empty; unoccupied; clear.
    • a leer stomach
    (Gifford)
  • Destitute; lacking; wanting.
  • Faint from lack of food; hungry.
  • Thin; faint.
  • Having no load or burden; free; without a rider.
    • a leer horse
    (Ben Jonson)
  • Lacking sense or seriousness; trifling; frivolous.
    • leer words

    Etymology 4

    From (etyl) leren, from (etyl) . Related to (etyl) {{m, ang, l?r, , lore, learning, science, art of teaching, preaching, doctrine, study, precept, exhortation, advice, instigation, history, story, cunning }}. See lore.

    Verb

    (en verb)
  • To teach.
  • To learn.

    • Etymology 5

    See (lehr)

    Noun

    (en noun)
    • English intransitive verbs ----

    undefined

    English

    Adjective

    (wikipedia undefined) (-)
  • Lacking a definition or value.
  • (mathematics, computing) That does not have a meaning and is thus not assigned an interpretation.
    • The result of division by zero is undefined .

    Antonyms

    * defined