rigorous
Cross references: 1. rigid rig.or.ous \'rig-(*-)r*s\ aj 1: manifesting, exercising, or favoring rigor : very strict 2: marked by extremes of temperature or climate : HARSH, SEVERE 3: scrupulously accurate : PRECISE - rig.or.ous.ly av
Cross references: 1. rigid rig.or.ous \'rig-(*-)r*s\ aj 1: manifesting, exercising, or favoring rigor : very strict 2: marked by extremes of temperature or climate : HARSH, SEVERE 3: scrupulously accurate : PRECISE - rig.or.ous.ly av