Root ن ك س(n k s) has 3 unique word forms and appears 3 times in the Quran.

English gloss Invert, Reverse, Lower, Withdraw, Bow, Tilt one head

Word Translation Occurrences
نَاكِسُواْ (will) hang 2
نُكِسُواْ they were turned 2
نُنَكِّسۡهُ We reverse him 2