unbacked

1. A certain amount of unbacked notes, signed by executives of The Hongkong and Shanghai Banking Corporation under duress, also went into circulation.
   当时香港上海丰银行的职员在日军强迫下，签署了大量没有储备支持的纸币，这些纸币更在市面流通。

adj

1. unsupported by other people

   Synonym:    single-handedunassisted