In each of the following sets of words underline the one word in each set that does not belong, then write a sentence explaining why it does not fit. You may need to use a dictionary.
1. vile, abominable, atrocious, spirited
2. gumption, indignant, initiative, ingenuity
3. interjection, fatigue, exhaustion, lethargy
4. pestilence, calcifications, courge, plague
5. fractious, irritable, unassertive, peevish
6. immodest, improper, incoherent, indecent