(س) سَمِعَ يَسْمَعُ سَمْعًا وَسَمَاعًاsamiʿa yasmaʿu samʿan wa-samāʿan: to hear, to hear and understand something. ﴿سَمِعْنَا وَاَطَعْنَا﴾ (Al-Baqarah 2:285)
سَمْعٌsamʿ: both a verbal noun (maṣdar) (hearing) and a noun (the faculty of hearing, ear — for both singular and plural). ﴿خَتَمَ اللّٰهُ عَلٰى قُلُوْبِهِمْ وَعَلٰى سَمْعِهِمْ﴾ (Al-Baqarah 2:7)
سَمِيْعٌsamīʿ (adjective on the pattern of فَعِيْلٌfaʿīl): one who hears well, all-hearing. ﴿اِنَّ اللّٰهَ سَمِيْعٌۢ بَصِيْرٌ﴾ (Al-Mujādilah 58:1)
سَمَّاعٌsammāʿ (intensive form, ṣīghat al-mubālaghah, on the pattern of فَعَّالٌfaʿʿāl): one who listens much, eavesdropper, spy. ﴿سَمّٰعُوْنَ لِلْكَذِبِ﴾ (Al-Māʾidah 5:41)
Form IV (ifʿāl) اَسْمَعَ يُسْمِعُ اِسْمَاعًاasmaʿa yusmiʿu ismāʿan: to make someone hear. ﴿اِنَّكَ لَا تُسْمِعُ الْمَوْتٰى﴾ (An-Naml 27:80)
مُسْمِعٌmusmiʿ (active participle, ism fāʿil): one who makes hear. ﴿وَمَآ اَنْتَ بِمُسْمِعٍ مَّنْ فِي الْقُبُوْرِ﴾ (Fāṭir 35:22)
مُسْمَعٌmusmaʿ (passive participle, ism mafʿūl): one who is made to hear. ﴿وَاسْمَعْ غَيْرَ مُسْمَعٍ﴾ (An-Nisāʾ 4:46)
Form VIII (iftiʿāl) اِسْتَمَعَ يَسْتَمِعُ اِسْتِمَاعًاistamaʿa yastamiʿu istimāʿan: to listen attentively, to hearken. ﴿وَاِذَا قُرِئَ الْقُرْاٰنُ فَاسْتَمِعُوْا لَهُۥ﴾ (Al-Aʿrāf 7:204)