The Collaborative International Dictionary of English v.0.48:
nonmechanical \nonmechanical\ adj. 1. not using a mechanism. Opposite of mechanical. [Narrower terms: nonmechanistic] [Narrower terms: unmechanized ] [WordNet 1.5] 2. Not having an aptitude to work with machinery; without mechanical skills; -- of persons. Syn: unmechanical. [WordNet 1.5]WordNet (r) 3.0 (2006):
nonmechanical adj 1: not mechanical [ant: {mechanical] 2: (of a person) lacking mechanical skills [syn: unmechanical, nonmechanical]