(ن) مَرَّ يَمُرُّ مَرًّا وَمُرُوْرًاmarra yamurru marran wa-murūran (original form: مَرَرَ يَمْرُرُmarara yamruru): (1) to twist a rope tightly (2) to pass by someone (one strand of a twisted rope passes by the other). ﴿وَاِذَا مَرُّوْا بِاللَّغْوِ مَرُّوْا كِرَامًا﴾ (Al-Furqān 25:72); ﴿حَمَلَتْ حَمْلًا خَفِيْفًا فَمَرَّتْ بِهِۦ﴾ (Al-Aʿrāf 7:189)
مَرَّةٌmarrah pl. مَرّٰتٌmarrāt (اسمِ مرّهasmi mrrh): one time, an occasion. ﴿اَلطَّلَاقُ مَرَّتٰنِ﴾ (Al-Baqarah 2:229)
Form X (istifʿāl) اِسْتَمَرَّ يَسْتَمِرُّ اِسْتِمْرَارًاistamarra yastamirru istimrāran: to continue uninterrupted; مُسْتَمِرٌّmustamirr (active participle, ism fāʿil): continuous, persistent. ﴿وَيَقُوْلُوْا سِحْرٌ مُّسْتَمِرٌّ﴾ (Al-Qamar 54:2); ﴿فِيْ يَوْمِ نَحْسٍ مُّسْتَمِرٍّ﴾ (Al-Qamar 54:19)