adverb
until now :so far
at this time :so soon as now
in addition - used for emphasis
to a greater extent or degree
at a later time
used to indicate how long something will last
as yet
also as of yet
until the present time :so far
just yet
the best is yet to come/be
yet again
for another time :again
conjunction
used to introduce a statement that adds something to a previous statement and usually contrasts with it in some way
US