I saw the answer to "automatic u-turn by a politician is futile" as being negatory. I get the politician being a tory but can somebody explain the "neg"
Many thanks
Trivial, trifling or of little importance; Ineffective, invalid or futile; Having no force, inoperative, ineffectual; Removable from a computer program with safety, but harmless if retained
http://en.wiktionary.org/wiki/nugatory