و ی لw-y-l
— No verb comes from the bare triliteral (thulāthī mujarrad).
وَيْلٌwayl (noun, ism dhāt): ruin, destruction, perdition, punishment, disgrace; used as an imprecation or an expression of grief. ﴿وَيْلٌ لِّكُلِّ هُمَزَةٍ لُّمَزَةٍ﴾ (Al-Humazah 104:1); ﴿وَيْلٌ لِّلْمُطَفِّفِيْنَ﴾ (Al-Muṭaffifīn 83:1)
وَيْلَةٌwaylah (noun, ism dhāt): the same sense; "يٰوَيْلَتٰىyāwaylatā" = alas, woe is me! ﴿قَالَتْ يٰوَيْلَتٰٓى ءَاَلِدُ وَاَنَا عَجُوْزٌ﴾ (Hūd 11:72); ﴿يٰوَيْلَتٰى لَيْتَنِيْ لَمْ اَتَّخِذْ فُلَانًا خَلِيْلًا﴾ (Al-Furqān 25:28)