一日不如一日 yīrìbùrúyīrì to worsen day by day Origin Definitions Defs Strokes Stroke Words Sentences Sents 一日 yīrì noun one day (duration) a full day and night; twenty-four hours不如 bùrú verbpreposition not as good as not equal to; inferior to; to be not as good as一日 yīrì noun one day (duration) a full day and night; twenty-four hours