decondition

[dee-kuh n-dish-uh n]

verb (used with object)

to diminish the physical strength, stamina, or vitality of; weaken.
to diminish or eliminate the conditioned responses or behavior patterns of.

Origin of decondition

First recorded in 1935–40; de- + condition
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019