Add a letter

Fairly tough, and has a high degree of initial sneakiness. (For those with long memories, four needles on the Stitchman scale of evilness)

-1. Add a letter to MEANT rearrange the letters, and get a word that means "lessening".
-2. Add a letter to CONES, rearrange the letters, and get a word that means "youth".
-3. Add a letter to DUNCE, rearrange the letters, and get a word that means "learning".
-4. Add a letter to ATLAS, rearrange the letters, and get a word that means "colossal".
-5. Add a letter to SILLY, rearrange the letters, and get a word that means "surreptitiously".
-6. Add a letter to PANDA, rearrange the letters, and get a word that means "hindrance"
-7. Add a letter to FLUTE, rearrange the letters, and get a word that means "malicious".
-8. Add a letter to ORBIT, rearrange the letters, and get a word that means "ban".
-9. Add a letter to PER, rearrange the letters, and get a word that means "an item of circus equipment".
-10. Add a letter to APRIL, rearrange the letters, and get a word that means "stealing someone else's ideas".
-11. Add a letter to SPIED, rearrange the letters, and get a word that means "globe".
-12. Add a letter to CLOSE, rearrange the letters, and get a word that means "kiss".

Enjoy,

Rog

9 - rope ???

12. osculate

3. education

OB - a nice try, but it's a bit sneakier than that

Sue, Cheryl - I salute you!

7. spiteful

Join the club, manxman!

1. abatement

Hi Rog.

5. stealthily

Both good, folks!

11. spheroid

2. adolescent

Excellent ladies, excellent!

6. handicap

8. prohibit

10. plagiarism

Hi Rog.

Correct, gentlemen!

9. trapeze

4. astronomical

... and the ladies tidy up!