What do the following words have in common?

BASE
ZONE
LIVES
WORD
ASCENT
STEROID
SLANDER
ALLIANCE

Answer:

Each word can be preceded by a single letter to form a new word:

ABASE
OZONE
OLIVES
SWORD
NASCENT
ASTEROID
ISLANDER 
DALLIANCE
 
Credit: GAMES Magazine - April, 1998
R. Wayne Schmittberger
MISSING IN ACTION