VAGARIES

[plural] [noun] - unexpected and uncontrollable happenings or changes which have an influence on a situationShe has her own style and is not influenced by the vagaries of fashion.The success of the event will be determined by the vagaries of the weather.The statistics on near-misses between aircraft depend too much on the vagaries of reporting to be reliable.If seasonal vagaries are taken into account, the figures show no significant decline.