LESS IS MORE IX

In this puzzle, the low score wins. Add at least one letter to each side of the letter groups below to form the shortest possible common words. Plurals ending in S and proper names are not allowed. It can be done by adding 25 letters.

1. _____ OIS _____

2. _____ RCA _____

3. _____ BAL _____

4. _____ XU _____

5. _____ DR _____

6. _____ RB _____

7 _____ OCO _____

8. _____ UDI _____

9. _____ UXU _____

10. _____ HYM _____

(Possible) Answers:

1. HOIST or MOIST

2. ARCANE

3. RIBALD or  COBALT

4. EXULT or EXUDE

5. CADRE

6. DERBY

7. COCOA

8. AUDIT

9. LUXURY

10. RHYME or THYME