(ن) قَصَرَ يَقْصُرُ قَصْرًاqaṣara yaqṣuru qaṣran: (1) to reduce, to shorten (2) to restrain, to confine. ﴿فَلَيْسَ عَلَيْكُمْ جُنَاحٌ اَنْ تَقْصُرُوْا مِنَ الصَّلٰوةِ﴾ (An-Nisāʾ 4:101)
قَاصِرَةٌqāṣirah pl. قٰصِرٰتٌqāṣirāt (active participle, ism fāʿil, feminine): (of women) restraining (their glances). ﴿وَعِنْدَهُمْ قٰصِرٰتُ الطَّرْفِ﴾ (Aṣ-Ṣāffāt 37:48)
مَقْصُوْرَةٌmaqṣūrah pl. مَقْصُوْرٰتٌmaqṣūrāt (passive participle, ism mafʿūl, feminine): confined, kept secluded. ﴿حُوْرٌ مَّقْصُوْرٰتٌ فِي الْخِيَامِ﴾ (Ar-Raḥmān 55:72)
قَصْرٌqaṣr pl. قُصُوْرٌquṣūr (noun, ism dhāt): palace, a lofty and strong building. ﴿اِنَّهَا تَرْمِيْ بِشَرَرٍ كَالْقَصْرِ﴾ (Al-Mursalāt 77:32)
Form IV (ifʿāl) اَقْصَرَ يُقْصِرُ اِقْصَارًاaqṣara yuqṣiru iqṣāran: to fall short, to desist. ﴿ثُمَّ لَا يُقْصِرُوْنَ﴾ (Al-Aʿrāf 7:202)
Form II (tafʿīl) قَصَّرَ يُقَصِّرُ تَقْصِيْرًاqaṣṣara yuqaṣṣiru taqṣīran: to shorten (the hair), to have it trimmed.
مُقَصِّرٌmuqaṣṣir pl. مُقَصِّرِيْنَmuqaṣṣirīna (active participle, ism fāʿil): one who has his hair trimmed. ﴿مُحَلِّقِيْنَ رُءُوْسَكُمْ وَمُقَصِّرِيْنَ﴾ (Al-Fatḥ 48:27)