apraxia (n.) Look up apraxia at Dictionary.com
"loss of the knowledge of the uses of things," 1877, medical Latin, from German apraxie, coined 1871 by German philologist and philosopher Heymann Steinthal (1823-1899), from Greek apraxia "inaction," from a- "not, without" (see a- (3)) + praxis "a doing, action, business" (see praxis) + abstract noun ending -ia.