What do the following clues have in common?

1. Mail, in England

2. Chooses

3. Dot

4. Halt 

5. Bests

6. Pans partner

 

Answer:

 

The clues have synonyms that are anagrams:

 

1. POST

2. OPTS

3. SPOT

4. STOP

5. TOPS

6. POTS