habituation n. + Add to list UK //hˌæbɪtʃuːˈeɪʃən// ha·bit·u·a·tion SynonymsEtymology Synonyms addictiondependancedependencedependencyOriginLA-MEDhabituātio→MEhabituacioun→ENhabituation From Middle English habituacioun, from Medieval Latin habituātio.