Definitions:

1. A change for the better or progress in development. NOUN
   • The corporation launched a sustainability program for the betterment of the environment, focusing on reducing its carbon footprint.
2. Making positive changes or advancements; aiming for a higher standard or greater effectiveness. NOUN
   • She attended the workshop for the betterment of her leadership skills, aiming to become a more effective manager.
3. The act of relieving ills and changing for the better. NOUN
   • He adopted a healthier lifestyle for the betterment of his physical and mental health.
4. The act or process to making something better. NOUN
   • The government increased its education budget for the betterment of public schools across the nation.

Synonyms:

• advance
• advancement
• amelioration
• easing
• edification
• enhancement
• improvement
• melioration
• moderation
• relief