all-important

Again, the difference can seem subtle and sound more like splitting hairs, but the difference is important.

But I hope at least to play to him a few times, and what is more important, to hear him play repeatedly.

That the inconstancy of such notices, in cases equally important, proves they did not proceed from any such agent.

He had discovered that the all-glorious boast of Spain was not exempt from the infirmities of common men.

An estimation of the solids, therefore, furnishes an important clue to the functional efficiency of the kidneys.

Words are often everywhere as the minute-hands of the soul, more important than even the hour-hands of action.