According to vocabulary.com, proactive is an adjective that means taking steps to prevent something from happening or lessening the impact of a potential event.
- Elizabeth was proactive in securing additional income when she heard whispers of a layoff.
- Alex was proactive in paying the bills on time.
- After her diagnosis, she was proactive in researching treatments.
- The building owners were proactive in building security.
Some synonyms include aggressive, anxious, ardent, and can-do.