impactful

Definitions

Having a major effect or influence.

Producing a strong impression or significant result.

Examples

The keynote speaker delivered an incredibly impactful presentation that inspired the entire audience.

Volunteering at the local shelter was an impactful experience that changed my perspective on community service.

The new policy had an impactful effect on the company's overall productivity and employee morale.

Synonyms

influential significant powerful effective meaningful consequential pivotal

Antonyms

insignificant ineffective trivial negligible unimportant inconsequential weak