Correct spelling for the English word "lifest" is [lˈa͡ɪfəst], [lˈaɪfəst], [l_ˈaɪ_f_ə_s_t] (IPA phonetic alphabet).
"Lifest" is not a recognized word in the English language and does not have a dictionary definition. It is possible that you might have intended to write "livest" instead, which is a contraction of the words "live" and "est."
In this case, "livest" is an archaic form of the second person singular present indicative of the verb "to live." It was commonly used in Old and Middle English as well as in certain dialects, but is no longer in common usage in contemporary English.
The term "livest" is essentially an older form of saying "you live" or "you are living." It specifically refers to the present moment and is used when speaking directly to a single person. For example, one might say "How livest thou, my friend?" as a way of asking someone how they are doing or how their life is currently going.
However, it is important to note that "livest" is considered archaic and thus may not be easily understood or recognized in modern contexts. Its usage is primarily found in literature, poetry, or when trying to emulate older language styles.