What do the following words have in common?

1. LIMB

2. BARB

3. CENT

4. CORN

5. HUNG

6. WAND

7. BROTH

8. SHOULD 

HINT:

It has to do with added letters.

Answer:

 

By adding ER to each word you get a new word that is a "false comparative." The new word is unrelated to the original word:

 

1. LIMB - LIMBER

2. BARB - BARBER

3. CENT - CENTER, etc. 

 

Credit:

Will Shortz

GAMES Magazine

October, 1983