Decisive and Momentous

Decisive adjective - Fully committed to achieving a goal.

Momentous is a synonym for decisive in definite topic. In some cases you can use "Momentous" instead an adjective "Decisive", when it comes to topics like crucial, pivotal.

Nearby Words: decide, decision, decisively, deciding, decisiveness

Momentous adjective - Having great meaning or lasting effect.

Decisive is a synonym for momentous in important topic. You can use "Decisive" instead an adjective "Momentous", if it concerns topics such as significant.

Nearby Words: moment, momentum, momentously