impacter

One who or that which makes an impact.

Japanese Meaning

影響（衝撃）を与えるもの、または与える者

The impacter behind the movement was a series of powerful personal stories that inspired change.

運動の原動力となったのは、人々に変化を促した一連の力強い個人的な物語でした。

Sense（1）

One who or that which makes an impact.

The impact forces are very large compared to the weights of the impacters.

impacters

（ plural ）