Unit 1 abnormal—apt 1
Unit 2 arc—blunder 13
Unit 3 blunt—chaos 25
Unit 4 characterize/-ise—concession 37
Unit 5 concise—cynical 51
Unit 6 damn—displace 63
Unit 7 disposition—engagement 75
Unit 8 enhance—flee 87
Unit 9 fling—grim 99
Unit 10 grin—incidence 112
Unit 11 incidentally—judicial 125
Unit 12 iunction—mechanism 136
Unit 13 medal—obligation 147
Unit 14 obscene—perplex 160
Unit 15 persistent—proposition 172
Unit 16 prose—refreshment 185
Unit 17 refuge—sculpture 196
Unit 18 seam—spectrum 209
Unit 19 speculate—swap 222
Unit 20 symmetry—tuck 235
Unit 21 tug—ward off 248