Root م ر ي(m r y) has 11 unique word forms and appears 20 times in the Quran.

English gloss Argument, Dispute, Doubt, Oppose, Contest

Word Translation Occurrences
مِرۡيَةٖ doubt, doubt 10
ٱلۡمُمۡتَرِينَ the doubters, the ones who doubt, the doubters, the ones who doubt 8
تَمۡتَرُونَ doubt, doubt 4
يَمۡتَرُونَ disputing, disputing, they dispute, they dispute 4
أَفَتُمَٰرُونَهُۥ Then will you dispute with him, Then will you dispute with him 2
مِرَآءٗ (with) an argument, (with) an argument 2
يُمَارُونَ dispute, dispute 2
فَتَمَارَوۡاْ but they disputed, but they disputed 2
تَتَمَارَىٰ will you doubt, will you doubt 2
تُمَارِ argue, argue 2
تَمۡتَرُنَّ (be) doubtful, (be) doubtful 2