Root و ه ن(w h n) has 6 unique word forms and appears 9 times in the Quran.

English gloss Weaken, Lack of strength, Discourage, Unnerve

Word Translation Occurrences
تَهِنُواْ be weak, weaken 6
مُوهِنُ one who makes weak 2
أَوۡهَنَ the weakest 2
وَهۡنٖ weakness 2
وَهۡنًا (in) weakness 2
وَهَنُواْ they lost heart 2
وَهَنَ (have) weakened 2