The word "behearken" is an archaic form of "hearken," which means to listen or pay attention. The spelling of "behearken" is influenced by the prefix "be-" added to the stem word "hearken." The correct IPA transcription is /biˈhɑːrk(ə)n/. The phonetic symbols in this transcription match the pronunciation of the word: "b" and "h" sound like a hard puff of air, the "a" is pronounced as in "father," and the "r" is slightly rolled.
The word "behearken" is not commonly used in modern English, and its etymology is not well-documented. However, it can be understood by analyzing its components.
The prefix "be-" in this context is an intensifying prefix, as found in words like "behold" (to see intensely) and "beseech" (to request intensely).
The second part of the word, "hearken", comes from Middle English "herknen", which means to listen or pay attention. It is derived from Old English "hiercnian", which has the same meaning.
Considering this analysis, "behearken" would suggest an intensified form of "hearken", implying a stronger or more focused act of listening or paying attention.