acting or existing without one's awareness subconscious motive
(psychoanal) that part of the mind which is on the fringe of consciousness and contains material of which it is possible to become aware by redirecting attention Compare preconscious (sense 2), unconscious (sense 5)
1823, "not wholly conscious" (implied in subconsciously), from sub- + conscious. First attested in De Quincey. The noun, in the psychological sense, is attested from 1886; earlier subconsciousness (1874).