The name Mica(h) is the accepted abbreviated form of the name Michaiah.
The name Mica(h) consists of two parts. The first bit is mi, the common inquisitive particle that seeks after identity: who?
The second part is ka,to be disheartened or frightened. Which makes the name Micah seem to say: Who Is Afraid?
Bring forth Mica(h)/Miciah