There are several synonyms for the phrase "under habit", including: - Habituated: used to or accustomed to a particular behavior or activity - Addicted: having a strong dependence or compulsion towards a particular behavior or substance - Accustomed: familiar with or used to a particular situation or behavior - Conditioned: trained or accustomed to respond in a particular way to a stimulus - Inclined: having a tendency or preference towards a particular behavior or activity - Prone: likely or susceptible to a particular behavior or condition Regardless of which synonym is used, they all convey the idea of being deeply entrenched in a particular habit or behavior pattern.