nugatory

nu·ga·to·ry  (ng-tôr, -tr, ny-)

adj.

1. Of little or no importance; trifling.

2. Having no force; invalid. See Synonyms at vain.

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[Latin ngtrius, from ngtor, trifler, from ngr, to trifle, from ngae, jokes.]

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nugatory [new-gat-tree]

Adjective

Formal

1. of little value

2. not valid: their rejection rendered the treaty nugatory [Latin nugae trifling things]

Thesaurus

Adj.

1.

nugatory - of no real value; "a nugatory law" worthless - lacking in usefulness or value; "a worthless idler"