From 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]
From WordNet (r) 3.0 (2006) :
nonmechanical
adj 1: not mechanical [ant: mechanical]
2: (of a person) lacking mechanical skills [syn: unmechanical,
nonmechanical]