51

 unconvincing , refine , pace , object , duplicate

 5

 184

 Toefl

 52

 unison , provided , huge , variety , shift

 5

 148

 Toefl

 53

 revolutionize , adroit , furthermore , creative , reminisce

 5

 205

 Toefl

 54

 detest , dye , alternative , cultivator , cognitive

 5

 163

 Toefl

 55

 boundary , rigorous , function , display , patron

 5

 191

 Toefl

 56

 abrupt , barge , scatter , ambivalent , ensue

 5

 151

 Toefl

 57

 embed , scant , persistent , transitory , cumulate

 5

 166

 Toefl

 58

 prohibit , irreparable , periphery , consequence , incidental

 5

 225

 Toefl

 59

 random , illuminate , abstract , paradox , slender

 5

 176

 Toefl

 60

 accessible , issue , heterogeneous , absorb , disclose

 5

 186

 Toefl