Origin: Germanic Old English suffix
Competitiveness has 2 different meanings across 1 category:
The state of being competitive.
"Her intense competitiveness drove her to practice every day until she finally won the championship."
In plain English: Competitiveness is how much you want to win against other people.
"The high competitiveness of the job market made it difficult for new graduates to find work immediately."
The word competitiveness is formed by adding the suffix "-ness" to the adjective "competitive." This construction simply indicates the state or quality of being competitive.