Stem تَمْتَرُ has 2 unique word forms and appears 3 times in the Quran.

Word Translation Occurrences
تَمۡتَرُونَ doubt, <span class='v'>doubt</span> 4
تَمۡتَرُنَّ (be) doubtful, <span class='paren'>(be)</span> <span class='v'>doubtful</span> 2