The same phonetic change can be made to each of the words below to create new words. Can you determine what it is?

1. EASEL
2. BUTTE
3. STIRRED
4. HUNGER
4. GROSSER

HINT:
The change occurs at the ends of the words.

Answer:

By adding the long e sound to the end of each word, a new word is formed phonetically:

1. EASEL - EASILY
2. BUTTE -BEAUTY
3. STIRRED - STURDY
4. HUNGER - HUNGARY
5. GROSSER - GROCERY 

Credit:
NPR Weekend Edition Sunday Puzzle
February 28, 2010
Will Shortz

NOTE: See also similar puzzle posted 12-14-16.