Correct spelling for the English word "whend" is [wˈɛnd], [wˈɛnd], [w_ˈɛ_n_d] (IPA phonetic alphabet).
The word whend does not have a well-established etymology as it is not a widely recognized or commonly used word. It is not found in standard dictionaries and does not have a clear origin or historical usage. It appears to be a non-standard or invented word that may have been created to resemble the structure of other interrogative words such as when. However, without further information or context, it is difficult to determine a specific etymology for the word whend.