STUMPERS LXVI

OPPOSITES OR NOT
Credit: GAMES Magazine
April, 1999
Edward Dermon

Can you name two eight-letter words that are synonyms as well as antonyms of one another, and which have the following letter patterns?

O _ _ _ O _ _ _
R _ _ _ R _ _ _

HINTS:
#1: The last three letters of both words are the same.
#2: The last three letters of both words are ING.

Answer:

The words are   OUTGOING and RETIRING.