THE OLD ONE - TWO
Credit: Will Shortz in The Puzzlemaster Presents

What do the following words have in common?

RAREST
OPTION
LEVIS
MAPLE
ALTITUDE
NUCLEAR
AWNING

HINT:
It has to do with the first two letters of each word.

Answers:

Reversing the first two letters of each word creates a new word.

RAREST - ARREST
OPTION - POTION
LEVIS - ELVIS
MAPLE - AMPLE
ALTITUDE - LATITUDE
NUCLEAR - UNCLEAR
AWNING - WANING