Bhairava originates from your phrase bhīru, which implies "fearsome". Bhairava means "terribly fearsome type". It can be also referred to as 1 who destroys concern or a person who's over and above fear. One interpretation is the fact that he safeguards his devotees from dreadful enemies, greed, lust, and anger. https://www.youtube.com/@tantramantraaurvigyaan