In doubt; in a state of uncertainty, or in a doubtful case.In dubio, liaec legis constructio quam verba ostendunt. In a case of doubt, that Isthe construction of the law which the words indicate. Branch, Princ.In dubio, pars mitior est seqnenda.In doubt, the milder course Is to be followed.In dubio, seqendum quod tutius est.In doubt, the safer course is to be adopted.