FLIP-FLOPS
Credit: GAMES Magazine - Feb. 1983
Ralph Maus

Each group of three letters below is the center of a seven-letter word in which the first two letters are the same as the last two letters - but reversed. For example, given the clue

_ _ ASI _ _ , the answer would be  EVASIVE - beginning with EV and ending with VE.

1. _ _ OUG _ _
2. _ _ AWI _ _
3. _ _ TEN _ _
4. _ _ RPL _ _
5. _ _ GWO _ _
6. _ _ TER _ _
7. _ _ TWI _ _
8. _ _ RNO _ _
9. _ _ DEN _ _
10. _ _ RDI _ _

HINTS:
One of the letters is:
1. H
2. G
3. N
4. U
5. O
6. L
7. E
8. U
9. A
10. A

Answers:

1. THOUGHT
2. GNAWING
3. ANTENNA
4. SURPLUS
5. DOGWOOD
6. LATERAL
7. ENTWINE
8. TURNOUT
9. ADDENDA
10. CARDIAC