Fully and freely enjoying oneself without thought to past or future.

That has fleeting significance; having heightened relevance or importance in the short-term.

A brief, unspecified amount of time. / The smallest portion of time; an instant. / (figuratively) Weight or importance.

A surname.

At this moment; right now. / (dated) At that time; then.

(obsolete) For a moment; briefly.

(obsolete) Lasting only for a moment; brief. / (obsolete) important; momentous / (obsolete, engineering) Of or relating to moment or momentum.

At this time

plural of momentful

In a momentous manner.