The correct spelling for the phrase is "be friend," with no space between "be" and "friend." This phrase means to become friends with someone. The IPA phonetic transcription for "be friend" is /biˈfrend/, with the stress on the second syllable. The "b" sound is voiced, while the "f" sound is unvoiced. The "r" sound is lightly pronounced, almost like a soft "uh" sound. It is important to use the correct spelling and pronunciation for effective communication.
The word "be friend" does not have a separate etymology as it is a combination of the noun "friend" and the verb "be". "Friend" originated from the Old English word "freond", which meant "to love, to favor". The verb "be" comes from Old English as well. When combined, "be friend" simply means to become or act as a friend, and there is no distinct etymology for this phrase as a whole.