vain, a. and n.
(veɪn)
Forms: α. 4–5 vayn (4, 5–6 Sc., wayn), 4–6 vayne (5–6 wayne), 4–7 vaine (5 Sc. waine), 4, 6– vain (4 wain). β. 4 vein, veen, 5 veine; 4–5 veyn (4 ueyn, 5 weyn), veyne (5 veyyne, feyne, Sc. weyne). γ. 4 wan, 5, 6 Sc., wane, 5–6 Sc. vane (6 uane).
[a. OF. vein, veyn, vain (F. vain):—L. vānus empty, void, idle, etc. (whence also It. and Sp. vano, Pg. vão).]
I. 1.I.1 Devoid of real value, worth, or significance; idle, unprofitable, useless, worthless; of no effect, force, or power; fruitless, futile, unavailing.
†b.I.1.b Of material things: Useless, worthless. Obs.
c.I.1.c Trivial, unimportant. rare—1.
†2.I.2 Empty, vacant, void. Also const. of. Obs.
3.I.3 Of persons: Devoid of sense or wisdom; foolish, silly, thoughtless; of an idle or futile nature or disposition. Now rare or Obs.
4.I.4 Given to or indulging in personal vanity; having an excessively high opinion of one's own appearance, attainments, qualities, possessions, etc.; delighting in, or desirous of attracting, the admiration of others; conceited. Also absol.
b.I.4.b Const. of.
II. 5.II.5 In the advb. phrase in vain, to no effect or purpose; ineffectually, uselessly, vainly. After L. in vanum, or OF. en vein (F. en vain, = It. in vano, Sp. en vano, Pg. em vão).
†b.II.5.b So for vain. Obs.—1
6.II.6 to take¨in vain: †a.II.6.a To disregard, to treat with contempt. Obs.
b.II.6.b With name as object. To use or utter (the name of God) lightly, needlessly, or profanely; transf. to mention or speak of casually or idly. A literal rendering of assumere (nomen Dei) in vanum in the Vulgate text of Exod. xx. 7.
†7.II.7 As n. a.II.7.a Vanity; a vain thing. Obs.
†b.II.7.b Emptiness, void space. Obs.
8.II.8 In misc. adjectival or adverbial combs. or attrib. uses, as vain-averted, vain-boasting, vain-conceited, vain-headed, vain-hearted, vain-proud, vain-spent, vain-talking, adjs.; vain-speaker, vain-struggling.
Hence †vain v. trans., to frustrate. Obs.—1