ظن

5 التَّظَنِّى ذ means The exercising, employing, or using, of الظَّنّ [i. e. thought, &c.]; originally التَّظَنُّنُ. (S, K.) A'Obeyd says, تَظَنَّيْتُ is from ظَنَنْتُ, and is originally تَظَنَّنْتُ; the ن being many, one of them is changed into ى: it is like قَصَّيْتُ, which is originally قَصَّصْتُ. (T.) -A2- See also 1, first sentence.