LESS IS MORE

The three letters in the word AID can be arranged in six different ways. Can you think of six valid words - one in each of the possible arrangements AND by adding the fewest letters possible to make the words. It can be done by adding eight letters. That is, only two of the arrangements required adding more that one letter. 

(Possible) Answer:

PAID

ADIT

TRIAD

IDAHO

DAIS

DIAL

 

Credit:

Joseph Appel