【Habituate】 , 【accustom】 ,  【addict】 ,  【inure】  mean to make used to something.

【Habituate】 distinctively implies the formation of habit through repetition.

【Accustom】 implies adjustment to something by frequent or prolonged experience or by constant exposure. To  【accustom】  oneself to nagging is to become inured to nagging by another person; to  【habituate】  oneself to nagging is to form the habit of nagging others. Sometimes  【accustom】 also connotes reconciliation by overcoming one’s resistance or distaste.

【Addict】 , which is used chiefly in a reflexive construction or in the passive, adds to  【habituate】 the implication of overindulgence or surrender to inclination and frequently refers to bad habits.

【Inure】  is a somewhat formal word that is a close synonym of  【accustom】 , but distinctively it may suggest a becoming callous or indifferent as a result of repeated exposure.