habituation

nouns

being abnormally tolerant to and dependent on something that is psychologically or physically habit-forming (especially alcohol or narcotic drugs)
addiction, dependance, dependence, dependency, habituation
is derived from
habituate
a general accommodation to unchanging environmental conditions
habituation
is derived from
habituate
is a type of (narrower)
making or becoming suitable; adjusting to circumstances
accommodation, adjustment, fitting