assuetude

Accustomedness; habit.

Assuetude of things hurtful doth make them lose their force to hurt.

The condition of an organism that has acquired tolerance of a drug or poison.

The boy had been his companion for years: and from assuetude had become, as it were, a part of himself.

My flesh writhed like the glutinous flesh of a serpent. Slowly moved, and stopped: -- then was a sweep -- and a swirl -- and a pause! then a swirl -- and a sweep -- and a pause! -- then steady industry of labour on the monstrous brazen axis, as the husbandman plods by the plough; then increase of zest, assuetude of a fledgeling to the wing -- then intensity -- then the last light ecstasy of flight.