yet

1 yet /ˈjɛt/ adverb
1 yet
/ˈjɛt/
adverb
Britannica Dictionary definition of YET
1 
a  : until now : so far
b  : at this time : so soon as now
2 
a  : in addition — used for emphasis
b  : to a greater extent or degree
3 
: at a later time
4 
— used to indicate how long something will last

as yet

also as of yet
: until the present time : so far

just yet

— see 2just

the best is yet to come/be

— see 3best

yet again

: for another time : again
2 yet /ˈjɛt/ conjunction
2 yet
/ˈjɛt/
conjunction
Britannica Dictionary definition of YET
— used to introduce a statement that adds something to a previous statement and usually contrasts with it in some way