Step 1: Context: Suzy expected wasteful behavior, but Kevin was not a spendthrift.
Step 2: Options: Salubrious (healthy), Perfidious (treacherous), Profligate (wasteful),
Abstemious (moderate), Prodigal (extravagant); Prudence (caution), Reticence (silence),
Piety (devotion), Dissipation (waste), Frugality (thrift).
Step 3: Prodigal (wasteful) fits her expectation, Frugality (thrift) contrasts spendthrift.
Step 4: Others mismatch expectation or thrift.