(UNTIL NOW) [adverb] [not gradable] - still; until the present timeI haven't spoken to her yet!Haven't you eaten your lunch yet?He hasn't finished yet.She hasn't told him yet.I got the book a month ago and I haven't yet had a chance to read it."Are you ready?" "Not yet - wait a moment."Of all the songs I've heard tonight that's the best yet."Is the cake cooked?" "Not (quite) yet - give it five more minutes."(formal) As yet (= Until now) we haven't needed extra staff, but it's only a matter of time.
YET
Meaning of YET in English
Cambridge English vocab. Кембриджский английский словарь. 2012