yet: значение и определения

At this time; for the present: isn't ready yet.

Up to a specified time; thus far: The end had not yet come.

At a future time; eventually: may yet change his mind.

Besides; in addition: returned for yet another helping.

Still more; even: a yet sadder tale.

Nevertheless: young yet wise.

And despite this; nevertheless: She said she would be late, yet she arrived on time.

as yet Up to the present time; up to now.