Having to do with machines.
careless or carelessly; impulsive; mechanical
The word "mechanical" means "of, or pertaining to, machines" - and machines are what mechanical engineers concern themselves with.
There are four syllables in the word mechanical. Me-chan-i-cal.
mecánico is the Spanish word for mechanical
The Greek root word for "mechanical" is "mechane," which refers to a machine or contrivance.
uhiji
ewAn kouh\
energy that is produced by non-mechanical means, meaning nothing to do with machines.
'MEANING' in other words can be the 'vocabulary' of a word or the 'essence' of the word as to what the word precisely means. OR meaning is the meaning of meaning what you just said meaning
mechanical
MECH
In general, "mechanical" is not the opposite of "authentic." The opposite of mechanical is manual. The opposite of authentic is fake.