Enter a clue or pattern or both:
The Clue
An ounce of this is worth the alternative (10 letter answer)
The Answer
PREVENTION
Tags
Notes
The answer PREVENTION is so rare that it appears less than once every 2500 puzzles.
Definition
PREVENTION as a noun:
1. (prevention, bar) = the act of preventing; "there was no bar against leaving"; "money was allocated to study the cause and prevention of influenza"