Adjective

(en-adj)

Overly proud of oneself, especially concerning appearance; having a high opinion of one's own accomplishments with slight reason.

* (rfdate) Leo Rosten

Every writer is a narcissist. This does not mean that he is vain ; it only means that he is hopelessly self-absorbed.

Having no real substance, value, or importance; empty; void; worthless; unsatisfying.

* (William Shakespeare) (1564-1616)

thy vain excuse

* Bible, (w) v. 6

Let no man deceive you with vain words.

* (John Milton) (1608-1674)

Vain wisdom all, and false philosophy.

Effecting no purpose; pointless, futile.

* (John Dryden) (1631-1700)

Vain is the force of man / To crush the pillars which the pile sustain.

* (rfdate) William of Occam

It is vain to do with more what can be done with fewer.

*{{quote-book, year=1922, author=(Ben Travers)

, chapter=6, title= A Cuckoo in the Nest , passage=But Sophia's mother was not the woman to brook defiance. After a few moments' vain remonstrance her husband complied. His manner and appearance were suggestive of a satiated sea-lion.}}

Showy; ostentatious.

* (Alexander Pope) (1688-1744)

Load some vain church with old theatric state.

Adjective

(en adjective)

Trivial, trifling or of little importance.

* 1872 ,

I might refer to the general conviction and the common sense of society that such an investment cannot be treated as absolutely idle and nugatory .

Ineffective, invalid or futile.

* 1792 ,

I can not dismiss the subject of Indian affairs without again recommending to your consideration the expediency of more adequate provision for giving energy to the laws throughout our interior frontier and for restraining the commission of outrages upon the Indians, without which all pacific plans must prove nugatory .

(legal) Having no force, inoperative, ineffectual.

* 1819 , (17 U.S. 316)

The word "necessary" is considered as controlling the whole sentence, and as limiting the right to pass laws for the execution of the granted powers to such as are indispensable, and without which the power would be nugatory .

(computing) Removable from a computer program with safety, but harmless if retained.