تُسَاعَ

[ , as meaning Nine and nine, or nine and nine together, or nine at a time and nine at a time, seems not to have been in use.] A'Obeyd says that more than أُحَادَ and ثُنَاءَ and ثُلَاثَ and رُبَاعَ has not been heard, except عُشَارَ occurring in a verse of El-Kumeyt. (TA in article عشر.)