I Jet Letter Emphasize Thing Adverb Received Receive

• i haven't received a letter from him yet.
• i didn't receive a letter from him yet.
• ‘are you ready?’ ‘no, not yet.’
• we don't yet know what really happened.

yet

1. used in negative sentences and questions to talk about something that has not happened but that you expect to happen
• I haven't received a letter from him yet.
• I didn't receive a letter from him yet.
• ‘Are you ready?’ ‘No, not yet.’
• We don't yet know what really happened.
• We have yet to decide what action to take (= We have not decided what action to take).
2. now; as soon as this
• Don't go yet.
• We don't need to start yet.
3. used to emphasize an increase in number or amount or the number of times something happens
• snow, snow and yet more snow
• yet another diet book
• Prices were cut yet again (= once more, after many other times).
4. used to emphasize that something is the best, longest, etc. thing of its kind made, produced, written, etc. until now/then
• the most comprehensive study yet of his music
• It was the tallest building yet constructed anywhere.
5. from now until the period of time mentioned has passed
• He'll be busy for ages yet.
• They won't arrive for at least two hours yet.
6. used to say that something could, might, etc. happen in the future, even though it seems unlikely
• We may win yet.
• She could yet surprise us all.
7. used to emphasize an increase in the degree of something (= how bad, important, etc. it is)
• SYNONYM even
  https://www.oxfordlearnersdictionaries.com/definition/english/even_2
• a recent and yet more improbable theory
8. until now or until a particular time in the past
• an as yet unpublished report
• As yet little was known of the causes of the disease.
9. used to say that while one thing is good, another thing is even better
• You can see and, better yet, hear the effects of these changes on their website.
• I wanted to make my parents proud by becoming a lawyer or, better yet, a doctor.
10. not now but probably quite soon
• I can't give you the money just yet.
11. used to comment on something that was almost successful but in fact failed

Word Origin

• Old English gīet(a), of unknown origin.