(ض) وَعَدَ يَعِدُ وَعْدًا وَعِدَةًwaʿada yaʿidu wa-ʿdan wa-ʿidatan (original form: وَعَدَ يَوْعِدُwaʿada yawʿidu): to promise (of good as well as of evil). ﴿وَعَدَ اللّٰهُ الَّذِيْنَ اٰمَنُوْا وَعَمِلُوا الصّٰلِحٰتِ﴾ (Al-Māʾidah 5:9)
وَعْدٌwaʿd (verbal noun (maṣdar), also noun (ism dhāt)): promise. ﴿اِنَّ وَعْدَ اللّٰهِ حَقٌّ﴾ (Luqmān 31:33)
وَعِيْدٌwaʿīd (on the pattern of فَعِيْلٌfaʿīl): a promise of evil, threat. ﴿فَذَكِّرْ بِالْقُرْاٰنِ مَنْ يَّخَافُ وَعِيْدِ﴾ (Qāf 50:45)
مَوْعِدٌmawʿid (noun of time or place (ẓarf) on the pattern of مَفْعِلٌmafʿil): the time or place of a promise. ﴿اِنَّ مَوْعِدَهُمُ الصُّبْحُ﴾ (Hūd 11:81)
مِيْعَادٌmīʿād (اصلاً مِوْعَادٌaṣlan miwʿād, noun of instrument (ism ālah) on the pattern of مِفْعَالٌmifʿāl used as a noun of time or place (ẓarf)): the appointed time of a promise. ﴿اِنَّ اللّٰهَ لَا يُخْلِفُ الْمِيْعَادَ﴾ (Āl ʿImrān 3:9)
Form IV (ifʿāl) اَوْعَدَ يُوْعِدُ اِيْعَادًاawʿada yūʿidu īʿādan: to threaten someone, to frighten. Only once in the Quran: ﴿وَلَا تَقْعُدُوْا بِكُلِّ صِرَاطٍ تُوْعِدُوْنَ﴾ (Al-Aʿrāf 7:86)
Form III (mufāʿalah) وَاعَدَ يُوَاعِدُ مُوَاعَدَةًwāʿada yuwāʿidu muwāʿadatan: to make a promise to one another, to fix an appointment (with someone). ﴿وَاِذْ وٰعَدْنَا مُوْسٰٓى اَرْبَعِيْنَ لَيْلَةً﴾ (Al-Baqarah 2:51)