The Latin root of "habit" is habitus, the past participle of the verb habere, meaning "to have" or "to hold." This Latin word originally conveyed the sense of "condition" or "state of being," and evolved to mean a settled disposition or tendency—what we now understand as a habit.
The term entered English through Old French habit in the 13th century, initially referring to clothing or outward appearance (since what one wears reflects and shapes one's state). Over time, the meaning broadened to encompass behavioral patterns and mental dispositions. The connection to appearance persists in the phrase "nun's habit," referring to the distinctive clothing worn by religious sisters.
Related English words share this same root: "habitual" (done or occurring regularly), "habitat" (the place where a creature lives or "holds" itself), "inhabit" (to dwell in), and "cohabit" (to live together). The philosophical concept of habitus was revived in the 20th century by sociologist Pierre Bourdieu, who used it to describe internalized social structures and dispositions that shape behavior and perception. Understanding the Latin root reveals how the concept of habit is fundamentally about states of being and holding—whether mental conditions, physical spaces, or behavioral patterns that we maintain.