(ن) نَجَا يَنْجُوْ نَجَآءً وَنَجَاةًnajā yanjū najāʾan wa-najātan (original form: نَجَوَ يَنْجُوُnajawa yanjuwu): to become separate from something; from this basic sense (1) to be delivered, to escape (2) to whisper (because this is done apart from others). ﴿وَقَالَ الَّذِيْ نَجَا مِنْهُمَا﴾ (Yūsuf 12:45)
نَاجٍnāj (اصلاً نَاجِوٌaṣlan nājiw, active participle, ism fāʿil): one who is delivered. ﴿وَقَالَ لِلَّذِيْ ظَنَّ اَنَّهُۥ نَاجٍ مِّنْهُمَا﴾ (Yūsuf 12:42)
نَجْوٰىnajwā (noun, ism dhāt): whispering, secret talk; also those who talk in secret. ﴿اِنَّمَا النَّجْوٰى مِنَ الشَّيْطٰنِ﴾ (Al-Mujādilah 58:10)
نَجِيٌّnajiyy (on the pattern of فَعِيْلٌfaʿīl, in the sense of a passive/active participle): one who is whispered to, a confidant; also those who talk in secret. ﴿وَقَرَّبْنٰهُ نَجِيًّا﴾ (Maryam 19:52); ﴿خَلَصُوْا نَجِيًّا﴾ (Yūsuf 12:80)
Form IV (ifʿāl) اَنْجٰى يُنْجِيْ اِنْجَآءًanjā yunjī injāʾan: to deliver, to rescue. ﴿فَاَنْجَيْنٰهُ وَاَهْلَهُۥٓ﴾ (Al-Aʿrāf 7:83)
Form II (tafʿīl) نَجّٰى يُنَجِّيْ تَنْجِيَةًnajjā yunajjī tanjiyatan: to deliver (gradually or with care); also to cast onto a high place. ﴿فَالْيَوْمَ نُنَجِّيْكَ بِبَدَنِكَ﴾ (Yūnus 10:92)
Form III (mufāʿalah) نَاجٰى يُنَاجِيْ مُنَاجَاةًnājā yunājī munājātan: to whisper to someone, to speak in confidence. ﴿اِذَا نَاجَيْتُمُ الرَّسُوْلَ﴾ (Al-Mujādilah 58:12)
Form VI (tafāʿul) تَنَاجٰى يَتَنَاجٰى تَنَاجِيًاtanājā yatanājā tanājiyan: to whisper and confer together. ﴿فَلَا تَتَنَاجَوْا بِالْاِثْمِ وَالْعُدْوَانِ﴾ (Al-Mujādilah 58:9)