conc▪ BAH2008 gives the variety of meanings attached to √MRḌ in ClassAr as: ‘to be sick, be taken ill; to nurse; affliction; pest, to be weak; to be of bad judgment; to be hypocritical, have doubt’.
▪ Original meaning in Sem probably ‘to feel or cause pain’, whence the values ‘to be grievous’, ‘be difficult’, and ‘to be strong’ in a number of Sem languages (↗mariḍa).