Odd one out

Try to find the odd one out.
That is the word which does not fit the series logically.
Answers like "it's the only one that contains an H" are to be avoided.
If you find an answer other than the one given, please let me know.
Vowels are A,E,I,O,U,Y
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Example: ONE, THREE, FIVE, SEVEN, EIGHT, NINE, ELEVEN Eleven= odd it has 3 vowels, the others have all 2.
1. Accept, Erratic, Errand, Innate, Offices, Occupy, Oppose	Answer
2. Heel, Gigolo, Gills, Helm, Boss, Beige	Answer
3. Aviate, Okay, Benign, Queue, Along, Easy	Answer
4. Raster, Altered, Aunts, Selves, Stale, Desires	Answer
5. Abies, Omega, Aspect, Equal, Opera, Effects	Answer
6. Mark, May, Frank, Colin, Jock, April, Bob	Answer
7. Agent, Assistant, Clerk, Dustman, Nanny, Secretary	Answer
8. Cinque Terre, Falanghina, Fiano di Avellino, Verdicchio, Greco di Tufo, Rapitala', Re Fosco, Trebbiano,	Answer
9. Abate, Bagno, Barbone, Battimano, Disonesto, Fasullo, Ippodromo, Puleggia	Answer
10. Burro, Upupa, Perca, Raven, Robin Okapi	Answer
11. Arm, Lap, Jaw, Toe, Gum, Hip Eye	Answer
12. Table, Bet, Foundation, Egg, Fish,	Answer
13. Abcessed, Monopoly, Disturb, Clarity Prideful,	Answer
14. Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday	Answer
15. Lodi, Mia, Neve, Noci, Padre Retto, Tuo, Ria	Answer
16. januari, februari, march, tuesday, may, october, december	Answer
17. Stab, Homes, Defers, News, Careful, Soap	Answer
18. overstuffed, starstudded, premenopausal, understudy, limnoplankton, superstuds	Answer

Odd One Out